Arthur Wellesley, 4th Duke of Wellington

Wellesley was born in 1849, the second son of Major-General Lord Charles Wellesley and Augusta Sophia Anne Pierrepont. Wellesley's paternal grandparents included the famous Arthur Wellesley, 1st Duke of Wellington, Catherine Pakenham and, on the maternal side, Henry Pierrepont, Lady Sophia Cecil. Between 1861 and 1866, he was educated at Eton. After graduating, Wellesley joined the military. He served as an officer in the Grenadier Guards, the most senior regiment of the Guards' division. The Guards formed part of the five-regiment Household Division, the elite of the military that provided security for the monarch. To be selected as a member of the Household Division was a great honor, and consequently recipients received two ranks, one as a member of the Household Division and a second, higher rank, as a member of the armed forces. Wellesley received the rank of Ensign, in his regiment, and Lieutenant, in the British Army, on 13 June 1868. He would later gain the rank of Lieutenant, in his regiment, and Captain, in the British Army, on 15 February 1871.

Throughout his career Wellesley saw no combat action: his duties were largely ceremonial as part of the Household Guard. He received the rank Captain in his regiment and Lieutenant-Colonel in the British Army on 5 April 1879. Wellesley received the rank of Major in his regiment and Colonel in the British Army on 1 August 1887.

On 8 June 1900 his childless brother Henry died. Wellesley succeeded to all of his brother's titles: Duke of Wellington, Prince of Waterloo, Duke of Ciudad Rodrigo, and Duke of Victoria. He also inherited the London town-house, Apsley House, and the sprawling family estates of Stratfield Saye House, with over 19,000 acres (7,700 ha) of land granted to the first duke by parliamentary purchase for military services. The estate also included four so-called livings; Wellesley had the duty, right, and obligation to fill positions in local parishes.

From 1900 until 1934 Wellesley was a member of the House of Lords on the Conservative bench. He was also a member of the Marlborough Club, a gentleman's club.

The Duchess died on 24 June 1927 at Apsley House and was interred on 28 June at Stratfield Saye. Wellesley died at Ewhurst Park, Basingstoke, Hampshire, on 18 June (ironically Waterloo Day) 1934, aged eighty-five, and was buried three days later at Stratfield Saye House, Basingstoke, Hampshire, the ancestral home of the Dukes of Wellington. His son, Arthur, succeeded him to the Wellesley family estates and titles.

The Duke received the Knight Grand Cross of the Royal Victorian Order (GCVO) on 1 May 1902. He was appointed a Knight of the Order of the Garter (KG) in the 1902 Coronation Honours list published on 26 June 1902, and was invested by King Edward VII at Buckingham Palace on 8 August 1902. He was also awarded the Spanish decoration of the Grand Cross of Charles III, and the Portuguese decoration of the Grand Cross of the Tower and Sword (GCTE).

On 24 October 1872, he married Kathleen Emily Bulkeley Williams, daughter of Captain Robert Griffith Williams (brother of Sir Richard Bulkeley Williams-Bulkeley, 10th Baronet) and wife Mary Anne Geale (daughter of Pears Geale, of Dublin). He and his wife had six children :

• Lady Evelyn Kathleen Wellesley (30 July 1873 – 19 January 1922) married Hon. Robert James, had one son
• Arthur Charles Wellesley, 5th Duke of Wellington (9 June 1876 – 11 December 1941)
• Lord Richard Wellesley (30 September 1879 – 29 October 1914)
• Gerald Wellesley, 7th Duke of Wellington (21 August 1885 – 4 January 1972)
• Lady Eileen Wellesley (13 February 1887 – 31 October 1952) married Capt. Cuthbert Julian Orde RFC, had two daughters
• Lord George Wellesley (29 July 1889 – 31 July 1967)