On 22 May 1781 Garrett Wellesley 1st Earl Mornington (age 45) died at Kensington. He was buried at Grosvenor Chapel. On 22 May 1781 His son Richard Wellesley 1st Marquess Wellesley (age 20) succeeded 2nd Earl Mornington, 2nd Viscount Wellesley of Dangan Castle.

On 26 Sep 1842 Richard Wellesley 1st Marquess Wellesley (age 82) died at Kingston House Knightsbridge. His brother William Wellesley aka Wellesley-Pole 3rd Earl Mornington (age 79) succeeded 3rd Earl Mornington, 3rd Viscount Wellesley of Dangan Castle. Katherine Forbes Countess Mornington (age 81) by marriage Countess Mornington.

On 22 Feb 1845 William Wellesley aka Wellesley-Pole 3rd Earl Mornington (age 81) died. His son William Pole Tylney Long Wellesley 4th Earl Mornington (age 56) succeeded 4th Earl Mornington, 4th Viscount Wellesley of Dangan Castle. Helena Paterson Bligh Countess Mornington by marriage Countess Mornington.

On 01 Jul 1857 William Pole Tylney Long Wellesley 4th Earl Mornington (age 69) died at Thayer Street Manchester Square Marylebone. He was buried at Catacomb B Kensal Green Cemetery. His son William Richard Arthur Pole Tylney Long Wellesley 5th Earl Mornington (age 43) succeeded 5th Earl Mornington, 5th Viscount Wellesley of Dangan Castle.

On 25 Jul 1863 William Richard Arthur Pole Tylney Long Wellesley 5th Earl Mornington (age 49) died in Paris [Map]. He was buried at Draycott Cerne Chippenham, Wiltshire. His first cousin once removed Arthur Wellesley 2nd Duke Wellington (age 56) succeeded 6th Earl Mornington, 6th Viscount Wellesley of Dangan Castle. Elizabeth Hay Duchess Wellington (age 42) by marriage Countess Mornington.

On 13 Aug 1884 Arthur Wellesley 2nd Duke Wellington (age 77) died. His nephew Henry Wellesley 3rd Duke Wellington (age 38) succeeded 3rd Duke Wellington, 7th Earl Mornington, 7th Viscount Wellesley of Dangan Castle, 3rd Viscount Wellington of Talavera. Evelyn Katrine Gwenfra Williams Duchess Wellington (age 29) by marriage Duchess Wellington.

On 08 Jun 1900 Henry Wellesley 3rd Duke Wellington (age 54) died at Stratfield Saye House [Map] without issue. His brother Arthur Charles Wellesley 4th Duke Wellington (age 51) succeeded 4th Duke Wellington, 8th Earl Mornington, 8th Viscount Wellesley of Dangan Castle, 4th Viscount Wellington of Talavera. Kathleen Emily Bulkeley Williams Duchess Wellington (age 51) by marriage Duchess Wellington.

On 18 Jun 1934 Arthur Charles Wellesley 4th Duke Wellington (age 85) died. His son Arthur Charles Wellesley 5th Duke Wellington (age 58) succeeded 5th Duke Wellington, 9th Earl Mornington, 9th Viscount Wellesley of Dangan Castle, 5th Viscount Wellington of Talavera. Lillian Maud Glen Coats Duchess Wellington (age 49) by marriage Duchess Wellington.

On 11 Dec 1941 Arthur Charles Wellesley 5th Duke Wellington (age 65) died. His son Henry Wellesley 6th Duke Wellington (age 29) succeeded 6th Duke Wellington, 10th Earl Mornington, 10th Viscount Wellesley of Dangan Castle, 6th Viscount Wellington of Talavera.

On 16 Sep 1943 Henry Wellesley 6th Duke Wellington (age 31) was killed during an attempt to take Pimple Hill. He was buried where he lay. He was unmarried and without issue. His uncle Gerald Wellesley 7th Duke Wellington (age 58) succeeded 7th Duke Wellington, 11th Earl Mornington, 11th Viscount Wellesley of Dangan Castle, 7th Viscount Wellington of Talavera. Dorothy Violet Ashton Duchess Wellington (age 54) by marriage Duchess Wellington.

On 04 Jan 1972 Gerald Wellesley 7th Duke Wellington (age 86) died. His son Arthur Valerian Wellesley 8th Duke Wellington (age 56) succeeded 8th Duke Wellington, 12th Earl Mornington, 12th Viscount Wellesley of Dangan Castle, 8th Viscount Wellington of Talavera. Diana McConnel Duchess of Wellington (age 49) by marriage Duchess Wellington.

On 31 Dec 2014 Arthur Valerian Wellesley 8th Duke Wellington (age 99) died at his home Stratfield Saye House [Map]. His son Arthur Charles Valerian Wellesley 9th Duke of Wellington (age 69) succeeded 9th Duke Wellington, 13th Earl Mornington, 13th Viscount Wellesley of Dangan Castle, 9th Viscount Wellington of Talavera.