Mary FitzMaurice, 4th Countess of Orkney

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Mary FitzMaurice, 4th Countess of Orkney (born Lady Mary O'Brien , born September 4, 1755 , † December 30, 1831 in Beaconsfield , Buckinghamshire ), was a British noblewoman .

Life

She was the only child of Murrough O'Brien, 1st Marquess of Thomond (1726-1808), and Mary O'Brien, 3rd Countess of Orkney (around 1721-1791).

On December 21, 1777 she married the Hon. Thomas FitzMaurice, the younger son of John Petty, 1st Earl of Shelburne (1706–1761). With him she had a son:

When her mother died in 1791, she inherited her Scottish nobility titles as 4th Countess of Orkney , 4th Viscountess of Kirkwall and 4th Lady Dechmont . Her father's Irish titles were only inheritable in the male line and therefore fell to her cousin William O'Brien, 1st Baron Tadcaster , as 2nd Marquess of Thomond on his death in 1791 .

Since she survived her son, her title of nobility fell on her death in 1831 to his eldest son Thomas FitzMaurice (1803–1877) as the 5th Earl of Orkney.

Web links

predecessor Office successor
Mary O'Brien Countess of Orkney
1791-1831
Thomas FitzMaurice