_The 12th (and last) Earl of Egmont died in late 2011.
Thomas Frederick Gerald Perceval was born 17 Aug 1934, son of the 11th Earl of Egmont (1914-2001), by his wife the former Ann Geraldine Moodie; unmarried.
He succeeded his father, 8 Dec 2001, in the family honours, viz:-12th Earl of Egmont (Ireland, let. pat. 6 Nov 1733) 12th Viscount Perceval, of Kanturk in the County of Cork (Ireland, let. pat. 25 Feb 1722/3) 12th Baron Perceval, of Burton in the County of Cork (Ireland, let. pat. 21 Apr 1715) 11th Baron Lovel and Holland, of Enmore in the County of Somerset (Great Britain, let. pat. 7 May 1762) 9th Baron Arden, of Lohort Castle in the County of Cork (Ireland, let. pat. 21 May 1770) 8th Baron Arden, of Arden in the County of Warwick (United Kingdom, let. pat. 20 Jul 1802) 16th Baronet, styled "of Burton" (Ireland, let. pat. 9 Sep 1661).
The peerages and baronetcy now become extinct.