James Hamilton, 6th Duke of Hamilton
James George Hamilton, 6th Duke of Hamilton and 3rd Duke of Brandon, KT( 10 July 1724 – 17 January 1758) was a Scottish peer.
Diana Wellesley, Duchess of Wellington
Diana Wellesley, Duchess of Wellington( 14 January 1922 – 1 November 2010), was the wife of Valerian Wellesley, 8th Duke of Wellington, and a British intelligence officer during World War II.
Henry Wellesley, 1st Baron Cowley
Henry Wellesley, 1st Baron Cowley GCB (20 January 1773 – 27 April 1847) was a British diplomat and politician.
Henry Wellesley, 3rd Duke of Wellington
Henry Wellesley, 3rd Duke of Wellington (5 April 1846 – 8 June 1900) was a British peer and Conservative Party politician.
He was a son of Lord Charles Wellesley and grandson of the 1st Duke of Wellington.
He was born with no title but inherited the dukedom when in 1884 his uncle died childless.
Between 1859 and 1865 he attended Eton.
He joined the 2nd Battalion, Grenadier Guards as an ensign on 16 May 1865, was promoted to major on 1 July 1881, and retired from the service on 28 June 1882.
He unsuccessfully contested the Parliamentary constituency of Andover in 1868.
He won the seat in 1874 and held it until the next election, 1880.
He succeeded his uncle as Duke of Wellington on 13 August 1884.
Subsequently, his sisters Victoria and Mary were granted the rank of daughters of a Duke.
He was appointed honorary colonel of the Hampshire Artillery 22 November 1884, and the 6th West York Militia on 10 April 1886.
He held both honours until his death.
He was special ambassador to Spain for the funeral of Alfonso XII in 1885, and chairman of the Society for the Suppression of Mendicity.
Wellington died at the family home of Strathfield Saye in 1900 and was buried there.
He married Evelyn Katrine Gwenfra Williams (1855 – 11 March 1939) on 7 March 1882; they had no issue.
He was succeeded by his brother, Arthur Charles.
In her memoirs, Lady Angela Forbes comments that "The Duke was the fattest man I have ever seen, and went by the nickname of "Spurgeon".
Charles Lennox, 3rd Duke of Richmond
Field Marshal Charles Lennox, 3rd Duke of Richmond, 3rd Duke of Lennox, 3rd Duke of Aubigny,( 22 February 1735 – 29 December 1806), styled Earl of March until 1750, was a British Army officer and politician.
He associated with the Rockingham Whigs and rose to hold the post of Southern Secretary for a brief period.
He was noteworthy for his support for the colonists during the American Revolutionary War, his support for a policy of concession in Ireland and his advanced views on the issue of parliamentary reform.
He went on to be a reforming Master- General of the Ordnance first in the Rockingham ministry and then in the ministry of William Pitt.
Jacobo Fitz-James Stuart, 3rd Duke of Berwick
Jacobo Francisco Eduardo Fitz- James Stuart y Colón de Portugal, 3rd Duke of Berwick, 3rd Duke of Liria and Jérica, 9th Duke of Veragua, 9th Duke of la Vega( 28 December 1718 – Valencia, 30 September 1785) was a Spanish Jacobite.
On the death of his father, James Fitz- James Stuart, in 1738, he inherited his titles of Duke of Berwick and Duke of Liria and Xerica( he also possessed many other titles in both Spain and England.)
His mother was Spanish, and on her side he was a direct descendant of explorer Christopher Columbus.
William Richard Mundell
Brigadier William Richard Mundell was the penultimate' Colonel of the Regiment' of the Duke of Wellington's Regiment( West Riding), before their amalgamation into the Yorkshire Regiment, 3rd Battalion( Duke of Wellington's).
Hugh Percy, 3rd Duke of Northumberland
Hugh Percy, 3rd Duke of Northumberland( 20 April 178511 February 1847), styled Earl Percy until 1817, was a British aristocrat and Tory politician who served as Lord Lieutenant of Ireland under the Duke of Wellington from 1829 to 1830.
Elizabeth Stafford, Duchess of Norfolk
Lady Elizabeth Stafford(" later" Duchess of Norfolk)( c. 1497 – 30 November 1558) was the eldest daughter of Edward Stafford, 3rd Duke of Buckingham and Lady Eleanor Percy.
By marriage she became Duchess of Norfolk.
Her abusive marriage to Thomas Howard, 3rd Duke of Norfolk, created a public scandal.
Lord Charles Wellesley
Major-General Lord Charles Wellesley (16 January 1808 – 9 October 1858, Apsley House) was a British politician, soldier and courtier.
He was the second son of Arthur Wellesley, 1st Duke of Wellington, and Catherine Pakenham.
He was educated at Eton College, and matriculated at Christ Church, Oxford in 1824, aged 16.
He was rusticated by the Dean of Christ Church, Samuel Smith, transferring in 1826 to Trinity College, Cambridge, graduating M.A. in 1831.
He married Augusta Sophia Anne Pierrepont, daughter of The Hon.
Henry Pierrepont, on 9 July 1844.
They had six children:
Wellesley represented the Conservative Party as the Member of Parliament (MP) for South Hampshire from 1842 to 1852, and the MP for Windsor from 1852 to 1855.
He was also a Chief Equerry and Clerk Marshal to Queen Victoria.
Lord Charles died aged 50 in 1858.
When his older brother, Arthur Wellesley, 2nd Duke of Wellington, died in 1884 with no heirs, Lord Charles's second child, Henry Wellesley (as the oldest surviving son) inherited his uncle's dukedom as Duke of Wellington.
When Henry also died childless in 1900, the peerage passed to Lord Charles’ second son Arthur Wellesley, Henry's brother.

Question: Where did Henry Wellesley, 3Rd Duke Of Wellington's father study?