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The HonourableSir William PonsonbyKCB
Portrait engraving published in 1817
Member of Parliament for Londonderry
In office 1812–1815
Preceded by	Lord George Thomas Beresford
Succeeded by	George Robert Dawson
Personal details
Born	(1772-10-13)13 October 1772 Ireland
Died	18 June 1815(1815-06-18) (aged 42) Waterloo, Belgium
Cause of death	Killed in action
Spouse	Georgiana FitzRoy
Military service
Allegiance	United Kingdom
Branch/service	British Army
Years of service	1794–1815
Rank	Major-General
Unit	5th Dragoon Guards
Commands	2nd Union Cavalry Brigade
Battles/wars	French Revolutionary Wars Irish Rebellion of 1798 Battle of Ballinamuck Napoleonic Wars Peninsular War Siege of Badajoz Battle of Villagarcia Battle of Salamanca Battle of Majadahonda Siege of Burgos Battle of Vitoria Battle of Toulouse Hundred Days Battle of Waterloo †

Major-General Sir William Ponsonby KCB (13 October 1772 – 18 June 1815) was an Anglo-Irish politician and British Army officer who served in the Peninsular War and was killed at the Battle of Waterloo.

Early life and education

He was the second son of William Ponsonby, who was created Baron Ponsonby of Imokilly in 1806, and Hon. Louisa Molesworth. He was the grandson of politician Hon. John Ponsonby and great-grandson of the 3rd Duke of Devonshire and the 1st Earl of Bessborough. Educated at Kilkenny and Eton, he married Hon. Georgiana FitzRoy, youngest daughter of Charles FitzRoy, 1st Baron Southampton. Together they had five children:

• Hon. Anne Louisa (d. 23 Jan 1863), who married William Tighe Hamilton and together had at least one son, Frederick FitzRoy Hamilton.
• Hon. Charlotte Georgiana (d. 7 Sep 1883), who married firstly Lt.-Col. John Horace Thomas Stapleton, son of Lt.-Gen. William Stapleton and Anna Maria Keppel (daughter of the Bishop of Exeter, Frederick Keppel), and had no issue. Secondly Rear-Adm. Sir Charles Talbot, son of Rev. Charles Talbot. They had seven children.
• Mary Elizabeth (d. 14 Sep 1838), who married Rev. Henry George Talbot, brother of her sister's husband, Charles. They had one son, Maj. Henry Charles Talbot.
• Frances Isabella (d. 1845), who married Rev. Hyde Wyndham Beadon, son of Rt. Rev. Richard Beadon and Annabella à Court, daughter of Sir William à Court, 1st Baronet. They had five children.
• Lord William (6 Feb 1816 – 2 Oct 1861), married Maria Theresa Duerbeck but died without issue.

Political career

Between 1796 and 1798, Ponsonby sat as a Member of Parliament (MP) in the Irish House of Commons for the Tories and represented Bandonbridge. Subsequently, he stood for Fethard (County Tipperary) and held this seat until the Act of Union in 1801. He entered the British House of Commons in 1812, sitting for Londonderry until his death. In 1815, he was appointed a Knight Commander of the Order of the Bath (KCB).

Peninsular War

When Ponsonby's command, the 5th Dragoon Guards, arrived in the Peninsula in October 1811, it became part of John Le Marchant's heavy cavalry brigade. For the rest of the war, this brigade included the 5th Dragoon Guards and the 3rd and 4th Dragoons. Ponsonby took part in Le Marchant's famous charge at the Battle of Salamanca in July 1812. On that occasion, the British heavy dragoons rode down one French infantry division and part of a second before being repulsed. Upon Le Marchant's death in the battle, Ponsonby took over the brigade, participating in the campaign that included the Siege of Burgos. In 1813, Ponsonby led his 1,200-strong cavalry brigade at the Battle of Vitoria. During the Battle of the Pyrenees and the autumn campaigns in the mountains, the Duke of Wellington sent the bulk of his cavalry to the rear. On 25 January 1814, Ponsonby took leave of his brigade and in the final battles in France, Lord Charles Manners exercised command.

Battle of Waterloo

Ponsonby's part in the Battle of Waterloo is remembered because it highlights some pertinent points about cavalry charging. Ponsonby was in command of the Union Brigade, so-called because it included an English, a Scottish and an Irish regiment. The brigade consisted of the 1st Royal and 6th Inniskilling Regiments of Dragoons in the first line and the 2nd Royal North British Dragoons (Scots Greys) in reserve. It had counter-attacked to great effect against the disorganised French columns of d'Erlon's I Corps. Carried away by their initial success, however, the brigade failed to rally and continued towards the French positions. The Scots Greys in particular, forgetting their supporting role and ignoring the "recall", charged on in disordered groups, some of whom reached the French guns on the other side of the valley. By this time their horses were exhausted and a swift retribution followed in the form of a counter-attack by the French lancers. The brigade suffered very heavy losses (see table below) and played no further part in the battle. Ponsonby, who was mounted on a horse of less value than the best one in his stable, rode too far and with his horse mired in mud close to enemy lines, was set upon by French Lancers. Recognising his rank and worth as a prisoner, the French gestured to him, urging him to surrender. He failed to understand them, and, when a group of his own Union Brigade spotted him and rode to his rescue, the lancers from one of the French line regiments (either the 3rd Lancers or 4th Lancers) attached to d'Erlon's I Corps had no option but to kill him. Myths growing up after the battle turned this into a guardsman from the "Red Lancers", which included the surviving squadron of the Polish lancers of the Guard. Following Ponsonby's death, command of the Union Brigade devolved upon Lieutenant-Colonel Arthur Clifton of the 1st Royal Dragoons.

Memorials

Ponsonby has a large marble monument at the west end of the crypt of St Paul's Cathedral in London. It was designed by Edward Hodges Baily in 1815.

Other

In the 1970 film Waterloo, Ponsonby was played by Michael Wilding.

Notes

1. "William Ponsonby at the Battle of Waterloo".
2. Oman 1913, p. 352 bottom: "By October 1, 5th Dragoon Guards had been added to this brigade."
3. Glover 1974, p. 203.
4. Oman 1913, p. 360: "W. Ponsonby, of the 5th Dragoon guards, succeeded to Le Marchant's brigade ..."
5. Oman 1913, p. 372: "From January 25, W. Ponsonby was absent, Lord C. Manners of 3rd dragoons commanding his brigade."
6. Romberg 1820, p. 256.
7. Barbero 2005, p. 163.
8. BTL staff 2008.
9. Dalton 1904, p. 56.
10. Haythornthwaite 1974, p. 105.
11. "Memorials of St Paul's Cathedral" Sinclair, W. p. 458: London; Chapman & Hall, Ltd; 1909
12. Dictionary of British Sculptors 1660-1851 by Rupert Gunnis

References

• Barbero, Alessandro (2005), The Battle: a New History of Waterloo, Walker
• BTL staff (2008), Charge of the Union Brigade, Waterloo Battlefield Tours Ltd, archived from the original on 9 February 2012
• Dalton, Charles (1904). The Waterloo roll call. With biographical notes and anecdotes. London: Eyre and Spottiswoode.
• Glover, Michael (1974), The Peninsular War 1807-1814, Penguin
• Haythornthwaite, Philip (1974), Uniforms of Waterloo in color, Hippocrene
• Oman, Charles (1913), Wellington's Army, 1809-1814, New York: Longmans, Green, and Co.
• Romberg, J. B. (1820), New picture of Brussels, p. 228

• 1772 births
• 1815 deaths
• British Army major generals
• British Army commanders of the Napoleonic Wars
• British military personnel killed in action in the Napoleonic Wars
• Irish MPs 1790–1797
• Irish MPs 1798–1800
• Knights Commander of the Order of the Bath
• Ponsonby family
• People educated at Kilkenny College
• People of the Battle of Waterloo
• UK MPs 1812–1818
• Younger sons of barons
• 5th Dragoon Guards officers
• Members of the Parliament of the United Kingdom for County Londonderry constituencies (1801–1922)
• Members of the Parliament of Ireland (pre-1801) for County Cork constituencies
• Members of the Parliament of Ireland (pre-1801) for County Tipperary constituencies