Earl of Belvedere (alternative spelling: Belvidere) was a title in the Peerage of Ireland created in 1756 for Robert Rochfort, 1st Viscount Belfield.
The title was created for Robert Rochfort, an Anglo-Irish politician who had represented Westmeath in the Irish House of Commons.
During his life the first Earl commissioned Belvedere House, thought to be designed by Richard Castles but James Gibbs is most likely to have been the architect.
After the Earl's death, his wife remarried and bore a son whom she christened George Augustus Rochfort Boyd.
A descendant of the family, George Arthur Boyd-Rochfort, was awarded the Victoria Cross for service in France during the First World War.