Arthur Wellesley, 1. Duke of Wellington (* vermutlich 1.Mai 1769 in Dublin, Irland; † 14. September 1852 in Walmer Castle bei Deal, Kent, England), war Feldmarschall und der herausragendste britische Militärführer der napoleonischen Zeit sowie britischer Außen- und zweimal Premierminister.
Brigadier Arthur Valerian Wellesley, 8th Duke of Wellington, KG, LVO, OBE, MC (2 July 1915 – 31 December 2014), styled Marquess of Douro between 1943 and 1972, was a senior British peer and a brigadier in the British Army. His main residence was Stratfield Saye House in Hampshire.
Wellesley was the third son of Lord Arthur Wellesley (later 4th Duke of Wellington) and Lady Arthur Wellesley (later Duchess of Wellington, née Kathleen Bulkeley Williams). He was baptised at St Jude's Church of Ireland parish church, Kilmainham, Dublin, on 27 September 1885.