Algernon Percy, 10th earl of Northumberland

Algernon Percy, 10th earl of Northumberland (baptized Oct. 13, 1602, London—died Oct. 13, 1668) was an English Roman Catholic moderate during the turbulent reign of Charles I of England. He became a peer as Baron Percy in 1627 and succeeded his father, the 9th earl, as earl of Northumberland in 1632. During the years immediately preceding the English Civil War he served as an admiral, making earnest but unsuccessful efforts to reform the navy, and...