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Alfonso X
Portrait of Alfonso X from the Libro de los juegos (1283)
King of Castile and León
Reign	1 June 1252 – 4 April 1284
Predecessor	Ferdinand III
Successor	Sancho IV
Born	23 November 1221 Toledo, Kingdom of Castile
Died	4 April 1284(1284-04-04) (aged 62) Seville, Kingdom of Castile
Burial	Cathedral of Seville
Spouse	Violant of Aragon ​(m. 1249)​
Issue among others...	Berengaria, Lady of Guadalajara Beatrice, Marchioness of Monferrat Ferdinand de la Cerda Sancho IV, King of Castile Peter, Lord of Ledesma John, Lord of Valencia de Campos Violant, Lady of Biscay James, Lord of Cameros Beatrice, Queen of Portugal Alfonso Fernández
House	Castilian House of Ivrea
Father	Ferdinand III of Castile
Mother	Elisabeth of Swabia

Alfonso X (also known as the Wise, Spanish: el Sabio; 23 November 1221 – 4 April 1284) was King of Castile, León and Galicia from 1 June 1252 until his death in 1284. During the election of 1257, a dissident faction chose him to be king of Germany on 1 April. He renounced his claim to Germany in 1275, and in creating an alliance with the Kingdom of England in 1254, his claim on the Duchy of Gascony as well.

Alfonso's scientific interests—he is sometimes nicknamed the Astrologer (el Astrólogo)—led him to sponsor the creation of the Alfonsine tables, and the Alphonsus crater on the Moon is named after him. He also sponsored the work of historians who, for the first time since Isidore of Seville in c600CE, placed Spain in the context of world history. As a lawmaker he introduced the first vernacular law code in Castile, the Siete Partidas. He created the Mesta, an association of sheep farmers in the central plain, but debased the coinage to finance his claim to the German crown. He fought a successful war with Portugal, but a less successful one with Granada. The end of his reign was marred by a civil war with his eldest surviving son, the future Sancho IV, which continued after his death.

Life

Early life

Born 23 November 1221 in Toledo, Kingdom of Castile, Alfonso was the eldest son of Ferdinand III and Elizabeth (Beatrice) of Swabia. His mother was the paternal cousin of Holy Roman Emperor Frederick II, to whom Alfonso is often compared. His maternal grandparents were Philip of Swabia and Irene Angelina. Little is known about his upbringing, but he was most likely raised in Toledo. For the first nine years of his life Alfonso was only heir to Castile until his paternal grandfather king Alfonso IX of León died and his father united the kingdoms of Castile and León. He began his career as a soldier, under the command of his father, when he was sixteen years old.

After the accession of King Theobald I of Navarre, Ferdinand tried to arrange a marriage for Alfonso with Theobald's daughter, Blanche, but the move was unsuccessful. At the same time, he had a romantic relationship with Mayor Guillén de Guzmán, who bore him a daughter, Beatrice. In 1240, he married Mayor Guillén de Guzmán, but the marriage was later annulled and their issue declared illegitimate. In the same period (1240–1250) he conquered several Muslim strongholds in Al-Andalus alongside his father, such as Murcia, Alicante and Cadiz.

In 1249, Alfonso married Violant, the daughter of King James I of Aragon and Yolande of Hungary, although betrothed already in 1246.

Reign

Alfonso succeeded his father as King of Castile and León in 1252. The following year he invaded Portugal, capturing the region of the Algarve. King Afonso III of Portugal had to surrender, but he gained an agreement by which, after he consented to marry Alfonso X's daughter Beatrice of Castile, the land would be returned to their heirs. In 1261 he captured Jerez. In 1263 he returned Algarve to the King of Portugal and signed the Treaty of Badajoz (1267).

In 1254 Alfonso X signed a treaty of alliance with King Henry III of England, supporting him in the war against King Louis IX of France. In the same year Alfonso's half-sister, Eleanor, married Henry's son Edward: with this act Alfonso renounced forever all claim to the Duchy of Gascony, to which Castile had been a pretender since the marriage of Alfonso VIII of Castile with Eleanor of England.

Imperial election

In 1256, at the death of William II of Holland, Alfonso's descent from the Hohenstaufen through his mother, a daughter of Philip of Swabia, gave him a claim through the Hohenstaufen line. Alfonso's election as German king by the prince-electors misled him into complicated schemes that involved excessive expense but never succeeded. Alfonso never even traveled to Germany, and his alliance with the Italian Ghibelline Lord Ezzelino IV da Romano deprived him of the initial support of Pope Alexander IV. His rival, Richard of Cornwall, went to Germany and was crowned in 1257 at Aachen.

To obtain money, Alfonso debased the coinage and then endeavored to prevent a rise in prices by an arbitrary tariff. The little trade of his dominions was ruined, and the burghers and peasants were deeply offended. His nobles, whom he tried to cow by sporadic acts of violence, rebelled against him in 1272. Reconciliation was bought by Alfonso's son Ferdinand in 1273.

In the end, after Richard's death, the German princes elected Rudolph of Habsburg (1273), Alfonso being declared deposed by Pope Gregory X. In 1275 Alfonso tried to meet with his imperial vicar in Italy, William VII of Montferrat (who had succeeded Ezzelino) and his Ghibelline allies in Piedmont and Lombardy to celebrate the victory against the Guelph Charles I of Anjou and be crowned in Lombardy; he was however halted in his imperial ambitions in Provence by the Pope who, after a long negotiation, obtained Alfonso's oral renunciation of any claims to the Holy Roman Empire.

Civil war

Throughout his reign, Alfonso contended with the nobles, particularly the families of Nuño González de Lara, Diego López de Haro and Esteban Fernández de Castro, all of whom were formidable soldiers and instrumental in maintaining Castile's military strength in frontier territories. According to some scholars Alfonso lacked the singleness of purpose required by a ruler who would devote himself to organization and also the combination of firmness with temper needed for dealing with his nobles although this is not a view taken by all. Others have argued that his efforts were too singularly focused on the diplomatic and financial arrangements surrounding his bid to become Holy Roman Emperor.

Alfonso's eldest son, Ferdinand, died in 1275 at the Battle of Écija against the Moroccan and Granadan invasion armies, leaving two infant sons. Alfonso's second son, Sancho, claimed to be the new heir, in preference to the children of Ferdinand de la Cerda, basing his claim on an old Castilian custom, that of proximity of blood and agnatic seniority. Alfonso preferred to leave the throne to his grandsons, but Sancho had the support of the nobility. A bitter civil war broke out resulting in Alfonso's being forced in 1282 to accept Sancho as his heir instead of his young grandsons; only the cities of Seville, Murcia and Badajoz remained faithful to him. Son and nobles alike supported the Moors when he tried to unite the nation in a crusade; and when he allied himself with Abu Yusuf Yakub, the ruling Marinid sultan of Morocco, they denounced him as an enemy of the faith. A reaction in his favor was beginning in his later days, but he died defeated and deserted at Seville in 1284, leaving a will, by which he endeavored to exclude Sancho, and a heritage of civil war.

Economic policy

In 1273, he created the Mesta, an association of some 3,000 petty and great sheep holders in Castile, in reaction to less wool being exported from the traditional sites in England. This organization later became exceedingly powerful in the country (as wool became Castile's first major exportable commodity and reported a trade surplus, called "white gold", as the wool amount was critical to the health of the population during the winter), and eventually its privileges were to prove a deadly wound in the Castilian economy. One side effect of the quickly expanding sheep herds was the decimation to the Castilian farmland through which the sheep grazed.

The original function of the Mesta was to separate the fields from the sheep-ways linking grazing areas.

Legislative activity

As a ruler, Alfonso showed legislative capacity, and a wish to provide the kingdoms expanded under his father with a code of laws and a consistent judicial system. The Fuero Real was undoubtedly his work. He began medieval Europe's most comprehensive code of law, the Siete Partidas, which, however, thwarted by the nobility of Castile, was only promulgated by his great-grandson. Because of this, and because the Partidas remain fundamental law in the American Southwest, he is one of the 23 lawmakers depicted in the House of Representatives chamber of the United States Capitol.

Military training

From a young age Alfonso X showed an interest in military life and chivalry. In 1231 Alfonso traveled with Pérez de Castron on a military campaign in lower Andalusia. Writing in Estoria de España, Alfonso describes having seen St. James on a white horse with a white banner and a legion of knights fighting a war above the soldiers of Spain. This vision of a heavenly army fighting in Jerez and participation in military campaigns likely left Alfonso X with a high degree of knowledge and respect for military operations and chivalric knights. Alfonso's respect for chivalry can also be seen in his writing of Spanish law. Spanish Chivalric conduct was codified in the Siete Partidas (2,21) where he wrote that knights should be, "of good linage and distinguished by gentility, wisdom, understanding, loyalty, courage, moderation, justice, prowess, and the practical knowledge necessary to assess the quality of horse and arms (Siete Partidas, 21,1–10)." These efforts to make a codified standard of chivalric conduct were likely meant to both encourage strength of arms (prowess) and to restrain the use of violence for only just (state-sponsored) usage.

Court culture

King Alfonso X developed a court culture that encouraged cosmopolitan learning. Alfonso had many works previously written in Arabic and Latin translated into vernacular Castilian in his court. Alfonso "turned to the vernacular for the kind of intellectual commitments that formerly were inconceivable outside Latin." He is credited with encouraging the extensive written use of the Castilian language instead of Latin as the language used in courts, churches, and in books and official documents (although his father, Ferdinand III, had begun to use it for some documents). This translation of Arabic and Classic documents into vernacular encouraged the development of Spanish sciences, literature, and philosophy.

Translations

From the beginning of his reign, Alfonso employed Jewish, Christian and Muslim scholars at his court, primarily for the purpose of translating books from Arabic and Hebrew into Latin and Castilian, although he always insisted on personally supervising the translations. This group of scholars formed his royal scriptorium, continuing the tradition of the twelfth-century Escuela de Traductores de Toledo (Toledo School of Translators). Their final output promoted Castilian as a learning language both in science and literature, and established the foundations of the new Spanish language. This evolved version of the Castilian language also acquired significant relevance in the royal chancery, where it came to replace Latin, which until then had been the language commonly used for royal diplomacy in Castile and León.

The very first translation, commissioned by his brother, Fernando de la Cerda—who had extensive experience, both diplomatic and military, among the Muslims of southern Iberia and north Africa—was a Castilian version of the animal fable Kalila wa-Dimna, a book that belongs to the genre of wisdom literature labeled Mirrors for Princes: stories and sayings meant to instruct the monarch in proper and effective governance.

The primary intellectual work of these scholars centered on astronomy and astrology. The early period of Alfonso's reign saw the translation of selected works of magic (Lapidario, Picatrix, Libro de las formas et las ymagenes) all translated by a Jewish scholar named Yehuda ben Moshe (Yhuda Mosca, in the Old Spanish source texts). These were all highly ornate manuscripts (only the Lapidario survives in its entirety) containing what was believed to be secret knowledge on the magical properties of stones and talismans. In addition to these books of astral magic, Alfonso ordered the translation of well-known Arabic astrological compendia, including the Libro de las cruzes and Libro conplido en los iudizios de las estrellas. The first of these was, ironically, translated from Latin (it was used among the Visigoths), into Arabic, and then back into Castilian and Latin. Most of the texts first translated at this time survive in only one manuscript each.

Astronomy

As an intellectual he gained considerable scientific fame based on his encouragement of astronomy, which included astrology at the time and the Ptolemaic cosmology as known to him through the Arabs. He surrounded himself with mostly Jewish translators who rendered Arabic scientific texts into Castilian at Toledo. His fame extends to the preparation of the Alfonsine tables, based on calculations of al-Zarqali, "Arzachel". Alexander Bogdanov maintained that these tables formed the basis for Copernicus's development of a heliocentric understanding in astronomy. Because of this work, the lunar crater Alphonsus is named after him. One famous, but apocryphal, quote attributed to him upon his hearing an explanation of the extremely complicated mathematics required to demonstrate Ptolemy's theory of astronomy was "If the Lord Almighty had consulted me before embarking on creation thus, I should have recommended something simpler." Gingerich (1990) says that a form of this alleged quotation was mentioned (but rejected) as early as the 16th century by the historian Jerónimo de Zurita, and that Soriano Viguera (1926) states that "nothing of the sort can be found in Alfonso's writings." Nevertheless, Dean Acheson (U.S. Secretary of State, 1949–1953) used it as the basis for the title and epigraph of his memoir Present at the Creation.

Chronicles

Alfonso also commissioned a compilation of chronicles, the Crónica general, completed in 1264. This chronicle sought to establish a general history and drew from older chronicles, folklore and Arabic sources. This work enjoyed renewed popularity starting in the sixteenth century, when there was a revival of interest in history; Florián de Ocampo published a new edition and Lorenzo de Sepúlveda used it as the chief source of his popular romances. Sepúlveda wrote a number of romances having Alfonso X as their hero.

Historical works

Alfonso's court compiled in Castilian a work titled General Estoria. This work was an attempt at a world history that drew from many sources and included translations from the Vulgate Old Testament mixed with myths and histories from the classical world, mostly Egypt, Greece, and Rome. This world history was left incomplete, however, and so it stops at the birth of Christ. The main significance of this work lies in the translations from Latin into Castilian. Much like his chronicles, the ability of Alfonso's court to compile writings from a variety of cultures and translate them into Castilian left a historic impact on Spain.

Alfonso X is credited with the first depiction of an hórreo, a typical granary from the northwest of the Iberian Peninsula. The oldest document containing an image of an hórreo is Alfonso's Cantigas de Santa Maria (song CLXXXVII) from XII A.C. In this depiction, three rectangular hórreos of Gothic style are illustrated.

Games

Alfonso also had the Libro de ajedrez, dados, y tablas ("Libro de los Juegos" (The Book of Games)) translated into Castilian from Arabic and added illustrations with the goal of perfecting the work. It was completed in 1283. The Libro de juegos contains an extensive collection of writings on chess, with over 100 chess problems and chess variants.

Music

Alfonso X commissioned or co-authored numerous works of music during his reign. These works included Cantigas d'escarnio e maldicer and the vast compilation Cantigas de Santa Maria ("Songs to the Virgin Mary"), which was written in Galician-Portuguese and figures among the most important of his works. The Cantigas de Santa Maria form one of the largest collections of vernacular monophonic songs to survive from the Middle Ages. They consist of 420 poems with musical notation. The poems are for the most part on miracles attributed to the Virgin Mary. One of the miracles Alfonso relates is his own healing in Puerto de Santa María.

Family

Violante was twelve or thirteen years old at the time of her marriage to Alfonso; she produced no children for several years and it was feared that she was barren. Alfonso almost had their marriage annulled, but they went on to have eleven children:

1. Berengaria (1253 – after 1284). She was betrothed to Louis, the son and heir of King Louis IX of France, but her fiancé died prematurely in 1260. She entered the convent in Las Huelgas, where she was living in 1284.
2. Beatrice (1254–1280). She married William VII, Marquess of Montferrat.
3. Ferdinand de la Cerda, Infante of Castile (23 October 1255 – 25 July 1275). He married Blanche, the daughter of King Louis IX of France, by whom he had two children. Because he predeceased his father, his younger brother Sancho succeeded to the throne.
4. Eleanor (1257–1275)
5. Sancho IV of Castile (13 May 1258 – 1295)
6. Constance (1258 – 22 August 1280), a nun at Las Huelgas.
7. Peter, Lord of Ledesma (June 1260 – 10 October 1283)
8. John, Lord of Valencia de Campos (March or April 1262 – 25 June 1319).
9. Isabella, died young.
10. Violant (1265–1296). She married Diego López V de Haro, Lord of Biscay
11. James, Lord of Cameros (August 1266 – 9 August 1284)

Alfonso X also had several illegitimate children. With Mayor Guillén de Guzmán, daughter of Guillén Pérez de Guzmán and of María González Girón, he fathered:

• Beatrice, married King Afonso III of Portugal.

With Elvira Rodríguez de Villada, daughter of Rodrigo Fernández de Villada, he fathered:

• Alfonso Fernández de Castilla (1242–1281), also known as el Niño, he held the title of "Señor de Molina y Mesa" through his marriage with Blanca Alfonso de Molina.

With María Alfonso de León, his aunt, the illegitimate daughter of the King Alfonso IX of León and Teresa Gil de Soverosa he had:

• Berenguela Alfonso of Castile, who married Pedro Núñez de Guzmán in 1264, but died young leaving behind no descendants.

References

1. The Book of Chess, Dice and Board Games.
2. Thacker & Escobar 2002, p. 20.
3. O'Callaghan 1998, p. 46.
4. Previté-Orton 1952, p. 902.
5. Márquez (1995) says "Some historians have been only too quick to label him, most unfairly, as a brilliant intellectual who was bungling and inefficient in practical affairs."
6. ^ Nicholas (1999)
7. The medieval church : the world of clerics and laymen. Burns, Robert I., Alfonso X, King of Castile and Leon, 1221–1284., Scott, Samuel Parsons. Philadelphia: University of Pennsylvania Press. 2001. pp. xix. ISBN 9780812217384. OCLC 847550277.{{cite book}}: CS1 maint: others (link)
8. Martinez (2010:82–83)
9. O'Callaghan (1993:65–66)
10. Márquez (1995:54)
11. Valdeón Baruque (2003)
12. Wacks (2007:86–128)
13. Carroll (2002:327–328)
14. Bogdanov, Alexander (1996). Bogdanov's Tektology: Book !. Hull: Centre for Systems Studies. p. 27.
15. Gingerich (1990:40 and 44n36)
16. Soriano Viguera (1926)
17. Acheson (1969)
18. ^ "Alfonso X – king of Castile and Leon". Encyclopedia Britannica.
19. ^ Procter (1951)
20. Burns (1990)
21. Musser Golladay (2007:31). Although Musser Golladay is not the first to assert that 1283 is the finish date of the Libro de Juegos, the a quo information compiled in her dissertation consolidates the range of research concerning the initiation and completion dates of the Libro de Juegos.
22. Wollesen, Jens T. "Sub specie ludi...: Text and Images in Alfonso El Sabio's Libro de Acedrex, Dados e Tablas", Zeitschrift für Kunstgeschichte 53:3, 1990. pp. 277–308.
23. Keller, John E. (2015). Daily life depicted in the Cantigas de Santa Maria. Cash, Annette Grant, 1943–. Lexington: University Press of Kentucky. p. 31. ISBN 9780813159096. OCLC 900344519.

Sources

• Acheson, Dean (1969), Present at the Creation: My Years in the State Department, New York: W. W. Norton
• Ballesteros-Beretta, Antonio (1963), Alfonso X el Sabio, Barcelona: Salvat
• Burns, Robert I. (1990), "Stupor Mundi: Alfonso X of Castile, the Learned", in Burns, Robert I. (ed.), Emperor of Culture: Alfonso X the Learned of Castile and His Thirteenth-Century Renaissance, Philadelphia: University of Pennsylvania Press, pp. 1–13
• Carroll, James (2002), Constantine's Sword: The Church and the Jews, Boston: Houghton-Mifflin
• Demontis, Luca (2012), Alfonso X e l'Italia: rapporti politici e linguaggi del potere, Alessandria: Edizioni dell'Orso
• Gingerich, Owen (1990), "Alfonso the Tenth as a Patron of Astronomy", in Márquez-Villanueva, Francisco; Vega, Carlos Alberto (eds.), Alfonso X of Castile: The Learned King (1221–1284): An International Symposium, Harvard University, 17 November 1984, Cambridge, Mass.: Department of Romance Languages and Literatures of Harvard University, pp. 30–45, reprint in Owen Gingerich, The Eye of Heaven: Ptolemy, Copernicus, Kepler (New York: American Institute of Physics, 1993)
• Hamilton, Thomas Wm. (1975), A King for the Stars (planetarium show)
• Márquez, Francisco (1995), "Vita: Alfonso X", Harvard Magazine, Jan.-Feb.: 54
• Martinez, H. Salvador (2010), Alfonso X, The Learned: a Biography, Translated by Odille Cisneros, Leiden: Brill
• Musser Golladay, Sonja (2007), Los Libros de Acedrex Dados E Tablas: Historical, Artistic and Metaphysical Dimensions of Alfonso X's Book of Games, Tucson: PhD diss., University of Arizona, archived from the original on 17 July 2011, retrieved 10 October 2018
• Nicholas, David (1999), The Transformation of Europe 1300–1600, London: Arnold
• O'Callaghan, F. (1993), The Learned King: The Reign of Alfonso X of Castile, Philadelphia, PA: University of Pennsylvania Press
• O'Callaghan, Joseph F. (1998). Alfonso X and the Cantigas De Santa Maria: A Poetic Biography. Brill.
• Previté-Orton, Charles William (1952). The Shorter Cambridge Medieval History. Vol. II The Twelfth Century to the Renaissance. Cambridge at the University Press.
• Procter, Evelyn S. (1951), Alfonso X of Castile: Patron of Literature and Learning, Oxford: Clarendon Press
• Soriano Viguera, José (1926), Contribución al conocimiento de los trabajos astronómicos desarrollados en la Escuela de Alfonso X el Sabio, Madrid: Alberto Fontana
• Thacker, Shelby; Escobar, Jose, eds. (2002), Chronicle of Alfonso X, The University Press of Kentucky, ISBN 0-8131-2218-X
• Valdeón Baruque, Julio (2003), Alfonso X: La forja de la España moderna, Madrid: Ediciones Temas de Hoy, ISBN 978-84-8460-277-4
• Wacks, David A. (2007), Framing Iberia: Maqamat and Frametales in Medieval Spain, Leiden: Brill

Further reading

• Alfonso X (1836), Opúsculos Legales del rey Don Alfonso el Sabio: Tomo I [Legal Booklets of King Don Alfonso the Wise: Volume I] (in Spanish), Madrid: Real Academia de la Historia
• Alfonso X (1836), Opúsculos Legales del rey Don Alfonso el Sabio: Tomo II [Legal Booklets of King Don Alfonso the Wise: Volume II] (in Spanish), Madrid: Real Academia de la Historia
• Doubleday, Simon R. (2015), The Wise King: A Christian Prince, Muslim Spain, and the Birth of the Renaissance, New York: Basic Books
• Gordon, Stewart (July–August 2009). "The Game of Kings". Saudi Aramco World. 60 (4). Houston: 18–23. Archived from the original on 20 July 2009. (PDF version) Cf. especially section on "The Alfonso X 'Book of Games'".
• Liuzzo Scorpo, Antonella (2011), "Religious Frontiers and Overlapping Cultural Borders: The Power of Personal and Political Exchanges in the Works of Alfonso X of Castile (1252–1284)", Al-Masaq, 23 (3): 217–236, doi:10.1080/09503110.2011.623910, S2CID 145264164
• Márquez, Francisco (1994), El concepto cultural alfonsí [Alphonso cultural concept] (in Spanish), Madrid: MAPFRE
• Martínez, H. Salvador (2010), Alfonso X, the Learned: A Biography, Leiden: Brill
• Remensnyder, Amy G. (2011), "The Virgin and the King: Alfonso X's Cantigas de Santa Maria", in Jason Glenn (ed.), The Middle Ages in Texts and Texture: Reflections on Medieval Sources, Toronto: University of Toronto Press, pp. 285–298
• Thomas, Phillip Drennon (1970). "Alfonso el Sabio". Dictionary of Scientific Biography. Vol. 1. New York: Charles Scribner's Sons. p. 122. ISBN 978-0-684-10114-9.
• Samsó, Julio (2007). "Alfonso X". In Thomas Hockey; et al. (eds.). The Biographical Encyclopedia of Astronomers. New York: Springer. pp. 29–31. ISBN 978-0-387-31022-0. (PDF version)
• Weiler, Björn (2007), "Kings and Sons: Princely Rebellions and the Structures of Revolt in Western Europe, c.1170–c.1280", Historical Research, 82 (215): 17–40, doi:10.1111/j.1468-2281.2007.00450.x
• Kennedy, Kirstin (2019). Alfonso X of Castile-León : royal patronage, self -promotion and manuscripts in thirteenth-century Spain. Amsterdam: Amsterdam University Press. ISBN 978-946-2988-972.
• Velasco, Jesús R. (2020). Dead Voice : Law, Philosophy, and Fiction in the Iberian Middle Ages. Philadelphia: University of Pennsylvania Press. ISBN 978-0812251869.

External links

• Lewis E 245 Fuero real (Royal municipal code) at OPenn
• Cantigas de Santa Maria
• Alphonso X – Book of Games
• Cantigas de Santa María, Códice rico, Real Biblioteca del Monasterio de San Lorenzo de El Escorial, MS T-I-1, link to manuscript
• Libros del Saber de Astronomía Archived 14 January 2009 at the Wayback Machine – Images of manuscript from 1276.
• Free scores by Alfonso X of Castile at the International Music Score Library Project (IMSLP)
• Free scores by Alfonso X of Castile in the Choral Public Domain Library (ChoralWiki)
• Alfonso X de Castilla y León, at Cancioneros Musicales Españoles.
• Works by or about Alfonso X of Castile at the Internet Archive
• Works by Alfonso X of Castile at LibriVox (public domain audiobooks)

v t e Monarchs of Castile
House of Jiménez	Ferdinand I Sancho II Alfonso VI Urraca
House of Burgundy	Alfonso VII Sancho III Alfonso VIII Henry I Berengaria Ferdinand III Alfonso X Sancho IV Ferdinand IV Alfonso XI Peter
House of Trastámara	Henry II John I Henry III John II Henry IV Isabella I & Ferdinand V Joanna & Philip I
House of Habsburg	Charles I Philip II Philip III Philip IV Charles II
House of Bourbon	Philip V

v t e Monarchs of León
Astur-Leonese house	Alfonso III García I Ordoño II Fruela II Alfonso Fróilaz Alfonso IV Ramiro II Ordoño III Sancho I Ordoño IV Sancho I Ramiro III Bermudo II Alfonso V Bermudo III
House of Jiménez	Ferdinand I Sancho II Alfonso VI Urraca
House of Burgundy	Alfonso VII Ferdinand II Alfonso IX Sancha & Dulce Ferdinand III Alfonso X Sancho IV Ferdinand IV Alfonso XI Peter
House of Trastámara	Henry II John I Henry III John II Henry IV Isabella I & Ferdinand V Joanna & Philip I
House of Habsburg	Charles I

v t e Monarchs of Galicia
Suebian kings	Hermeric Rechila Rechiar Aioulf Maldras Framta Richimund Frumar Remismund Hermeneric Veremund Theodemund Chararic Ariamir Theodemar Miro Eboric Audeca Malaric
Astur-Leonese dynasty	Ordoño II Sancho I Bermudo II Alfonso V Bermudo III
House of Jiménez	García II Sancho II Alfonso VI Urraca
House of Burgundy	Alfonso VII Ferdinand II Alfonso IX Sancha & Dulce Ferdinand III Alfonso X Sancho IV Prince John Ferdinand IV Alfonso XI Peter
Portuguese House of Burgundy	Ferdinand I of Portugal
House of Lancaster	John of Gaunt
House of Trastámara	Henry II John I Henry III John II Henry IV Isabella I & Ferdinand V Joanna & Philip I
House of Habsburg	Charles I

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