The Complete Guide to the British Peerage & Baronetage
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Antrim, Marquess of (I, 1789 - 1791)
Creation: let.pat. 18 Aug 1789
Extinct: 29 Jul 1791
Family name: MacDonnell
See Earl of Antrim
Randal William [MacDonnell], 6th Earl of Antrim later 1st Marquess of Antrim, KB PC
only son and heir of Alexander [MacDonnell], 5th Earl of Antrim, by his second wife Anne Plunkett, 1st dau. and cohrss. of Hon Charles Patrick Plunkett, of Dillonstown, co. Louth
4 Nov 1749
3 Jul 1774 Hon Letitia Trevor (widow of Hon Arthur Hill-Trevor MP, only son and heir ap. by his second wife of Arthur [Hill later Hill-Trevor], 1st Viscount Dungannon; d. 7 Dec 1801), 1st dau. of Harvey [Morres], 1st Viscount Mountmorres, by his first wife Lady Letitia Ponsonby, 4th dau. by his first wife of Brabazon [Ponsonby], 1st Earl of Bessborough
1. Lady Anne Katherine MacDonnell, later suo jure Countess of Antrim
2. Lady Letitia Mary MacDonnell (b. 12 Aug 1775; d. young)
3. Lady Charlotte MacDonnell, later suo jure Countess of Antrim
s.p.m. 29 Jul 1791
19 Jun 1785 Viscount Dunluce and Earl of Antrim, with a special remainder failing heirs male of his body to his daughters in order of seniority and the heirs male of their bodies respectively
18 Aug 1789 Marquess of Antrim, but with no such special remainder
Member of Parliament for Co. Antrim 1768-75; Sheriff of Co. Antrim 1771; Knight of the Bath 1779; nom. Knight of St Patrick 1783 but never installed as he unwilling to relinquish the Bath; Privy Councillor [I] 1786
On the death of the 1st Marquess of Antrim the Marquessate of Antrim and the titles he inherited from his father became extinct and he was succeeded in the 1785 Earldom of Antrim by his eldest daughter, Lady Anne MacDonnell.
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