The Complete Guide to the British Peerage & Baronetage
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Montagu, Duke of (GB, 1766 - 1790)
Creation: let. pat. 5 Nov 1766
Extinct: 23 May 1790
Family name: Brudenell later Montagu
See Duke of Montagu
George [Brudenell later Montagu], 4th Earl of Cardigan later 1st Duke of Montagu, KG PC
1st son of George [Brudenell], 3rd Earl of Cardigan, by his wife Lady Elizabeth Bruce, 1st dau. by his first wife of Thomas [Bruce], 3rd Earl of Elgin
26 Jul 1712
7 Jul 1730 Lady Mary Montagu (b. c.1711; d. 1 May 1775), 2nd surv. dau. and cohrss. of John [Montagu], 2nd Duke of Montagu, by his wife Lady Mary Churchill, 3rd dau. and cohrss. of John [Churchill], 1st Duke of Marlborough
1. Lord John Montagu, styled Marquess of Monthermer later 1st Baron Montagu of Boughton
1. Lady Elizabeth Montagu (b. 29 May 1743; d. 21 Nov 1827), mar. 2 May 1767 Henry [Scott], 3rd Duke of Buccleuch, and had issue
2. Lady Mary Montagu (d. unm.)
3. Lady Henrietta Montagu (d. unm.)
23 May 1790
5 Nov 1766 Marquess of Monthermer and Duke of Montagu
21 Aug 1786 Baron Montagu of Boughton, of Boughton in the County of Northampton, for life, with a special remainder in favour of the second and every younger son of his daughter Elizabeth, Duchess of Buccleuch, and their issue in tail male successively
suc. his father 5 Jul 1732 as 4th Earl of Cardigan; Chief Justice in Eyre, North of Trent 1742-52; assumed the name and arms of Montagu on the death s.p.m.s. of his father-in-law 1749; Constable of Windsor Castle 1752; Knight of the Garter 1752; Privy Councillor and Governor to the Prince of Wales and Prince Frederick 1776; Master of the Horse 1781; Lord Lieutenant of Huntingdonshire 1789
On the death of the 1st Duke of Montagu the Marquessate of Monthermer and the Dukedom of Montagu became extinct, the Earldom of Cardigan passed to his brother, and the Barony of Montagu of Boughton devolved on his grandson according to the special remainder in its creation.
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