Earl Desart is in Earl Ireland.
In 1842 John Cuffe 3rd Earl Desart [aged 23] and Elizabeth Lucy Campbell Countess Desart [aged 20] were married. She by marriage Countess Desart. She the daughter of John Campbell 1st Earl Cawdor [aged 51] and Elizabeth Thynne Countess Cawdor [aged 46].
On 1st April 1865 John Cuffe 3rd Earl Desart [aged 46] died. His son William [aged 19] succeeded 4th Earl Desart.
On 19th July 1876 Hamilton John Agmondesham Cuffe 5th Earl of Desart [aged 27] and Margaret Joan Lascelles Countess of Desart [aged 22] were married. She by marriage Countess Desart. She the daughter of Henry Thynne Lascelles 4th Earl Harewood [aged 52] and Elizabeth Joanna Burgh. He the son of John Cuffe 3rd Earl Desart and Elizabeth Lucy Campbell Countess Desart [aged 54]. They were second cousins.
On 15th September 1898 William Ulick O'Connor Cuffe 4th Earl of Desart [aged 53] died. His brother Hamilton [aged 50] succeeded 5th Earl Desart.
On 4th November 1934 Hamilton John Agmondesham Cuffe 5th Earl of Desart [aged 86] died. Earl Desart extinct.