Cracroft's Peerage
The Complete Guide to the British Peerage & Baronetage

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Thomond, Earl of (I, 1756-1774)


Creation: let. pat. 11 Dec 1756


Extinct: 21 Jul 1774


Family name: Wyndham-O'Brien




Quarterly: 1st and 4th grand guarters: Quarterly: 1st and 4th, Gules three Lions passant guardant in pale per pale Or and Argent; 2nd, Argent three Piles points meeting in base Gules; 3rd, Or a Pheon point downwards Azure (O'Brien); 2nd and 3rd grand quarters: Azure a Chevron between three Lions' Heads erased Or (Wyndham)


A Naked Arm embowed holding in the hand a Sword all proper


On either side a Lion guardant per fess Or and Argent



Percy [Wyndham later Wyndham-O'Brien], 1st Earl of Thomond, PC

younger brother of Charles [Wyndham], 2nd Earl of Egremont, and 2nd son of Rt Hon Sir William Wyndham, 3rd Bt., of Orchard Wyndham, co. Somerset, by his first wife Lady Katherine Seymour, 2nd dau. by his first wife of Charles [Seymour], 6th Duke of Somerset


c. 1723


21 Jul 1774


11 Dec 1756 Baron Ibrackan and Earl of Thomond


upon inheriting the estates of Henry [O'Brien], 7th Earl of Thomond (the husband of his mother's sister) in 1741, he assumed under the late Earl's will the name of O'Brien after that of Wyndham; Member of Parliament (Tory) for Taunton 1745-47, for Minehead 1747-54 and 1761-68, for Cockermouth 1754-61 and for Winchilsea 1768-74; a Lord of the Treasury 1755-56; Privy Councillor 1757; Treasurer of the Household 1757-61; Cofferor of the Household 1761-65; Lord Lieutenant of Somerset 1764-73


On the death of the 1st Earl of Thomond the Earldom of Thomond became extinct.


First written 6 Feb 2014



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