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In his history work Shajara-i Tarākima (Genealogy of Turkmens), the Khan of the Khanate of Khiva and historian Abu al-Ghazi Bahadur mentions Begdili among 24 Oghuz tribes, direct descendants of Oghuz-khan, who was the ancient progenitor of the Oghuz people, and the name of the tribe translates as “reputable”.
Affiliation
The Anushteginid dynasty, which ruled vast parts of Central Asia from 1077 to 1231 under the title of Khwarazmshahs, descended from the Begdili tribe. The Mamluk Sultan of Egypt - Saif ad-Din Qutuz, who ruled Egypt from 1259 to 1260, also widely believed to have come from the Begdili tribe.
Begdili tribe played important role on Seljuk expansion over Iran and Anatolia. They also participated on foundation and administration of Aq Qoyunlus and Safavids.
In the Middle Ages, a large group of Begdili Turkmens migrated from Central Asia to the territory of modern Iran, Azerbaijan and Turkey. In Azerbaijan and Turkey, there are still some toponyms that are called Begdili.
Sources
Information about the origin of the Begdili mostly comes from the famous statesman and historian of the Ilkhanate, Rashid-al-Din Hamadani in his "Jami' al-tawarikh" (Compendium of Chronicles), and from the work of the Khan of Khiva Abu al-Ghazi Bahadur, titled "Genealogy of Turkmens".
Fazlallakh, Rashid ad-Din (1987). Oghuznameh (in Russian). Baku.{{cite book}}: CS1 maint: location missing publisher (link)"Similarly, the most distant ancestor of Sultan Muhammad Khwarazmshah was Nushtekin Gharcha, who was a descendant of the Begdili tribe of the Oghuz family."
Koperman, Kazım Yaşar (1989). Mısır Memlükleri tarihi: Sultan al-Malik al-Mu'ayyad Şeyh al-Mahmûdô devri: (1412-1421) (in Turkish). Ankara: Ministry of Culture and Tourism Publications.