Murrough O'Brien, 1st Marquess of Thomond
Irish Marquess
(1726–1808)
Parents
James O'Brien
Mary Jephson
Children
Mary FitzMaurice, 4th Countess of Orkney
Siblings
Henrietta O'Brien
Anne O'Brien
Edward Dominic O'Brien
Partners
Mary Palmer, Countess of Inchiquin
Mary O'Brien, 3rd Countess of Orkney
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