Member of Parliament in the United Kingdom
Kirkwall was the son of the Honorary Thomas FitzMaurice, younger son of John Petty, 1st Earl of Shelburne. His mother was Mary, suo jure Countess of Orkney, daughter of Murrough O"Brien, 1st Marquess of Thomond and Mary, suo jure Countess of Orkney.
His father was the Thomas FitzMaurice, 5th Earl of Orkney. He gained the courtesy title Viscount Kirkwall when his mother succeeded as Countess of Orkney in 1791. Kirkwall was returned to Parliament for Heytesbury in 1802, a seat he held until 1806, and later represented Denbigh Boroughs between 1812 and 1818.
Lord Kirkwall married the Honorary
Anna Maria, daughter of John Blaquiere, 1st Baron de Blaquiere, in 1802. He died in November 1820, aged 42, predeceasing his mother by eleven years.
William was a politician. Lady Kirkwall died in January 1843.
Royal Society; 2nd United Kingdom Parliament. 5th United Kingdom Parliament.
