Family:Murrough O'Brien and Mary O'Brien (1)

Parents: James O'Brien and Mary Jephson Murrough O'Brien, 1st Marquess of Thomond b. 1726 d. 10 Feb 1808	Parents: William O'Brien and Anne Douglas-Hamilton Mary O'Brien, 3rd Countess of Orkney b. Abt 1721 d. 1791

Family tree▼

Children

		Birth	Death
1.	Mary O'Brien	4 Sep 1755	30 Dec 1831