Richard Wellesley, 1st Marquess Wellesley, was born 29 June 1760 to Garret Colley Wesley, 1st Earl of Mornington (1735-1781) and Anne Hill-Trevor (1742-1831) and died 26 September 1842 of unspecified causes. He married Hyacinthe-Gabrielle Roland (c1762-1816) 29 November 1794 .
|Offspring of Richard Wellesley, 1st Marquess Wellesley and Hyacinthe-Gabrielle Roland (c1762-1816)|
|Richard Wellesley (1787-1831)|
|Anne Wellesley (c1788-1875)||29 February 1788||19 March 1875||William Abdy (1779-1868) William Abdy (1779-1868) William Charles Augustus Cavendish-Bentinck (1780-1826)|
|Hyacinthe Mary Wellesley (1789-1849)|
|Gerald Wellesley (1792-1833)|
|Henry Wellesley (1794-1866)|