|Born||13 January 1794|
London, Great Britain
|Died||28 December 1848 (aged 54)|
|House||House of Hanover|
|Father||Prince Augustus Frederick, Duke of Sussex|
|Mother||Lady Augusta Murray|
Sir Augustus Frederick d'Este, KCH (1794-1848) was the son of Prince Augustus Frederick, Duke of Sussex and Lady Augusta Murray and the grandson of George III. His parents marriage was in contravention of the Royal Marriages Act 1772, which meant that Augustus d'Este was legally considered illegitimate.