Josceline Percy, 11th Earl of Northumberland
Josceline Percy, 11th Earl of Northumberland, 5th Baron Percy, of Alnwick Castle, Northumberland and Petworth House, Sussex, was an English peer. Wikipedia
Born: July 4, 1644
Died: May 31, 1670 (age 25 years)
Great grandchildren: Elizabeth Percy, Duchess of Northumberland, Catherine Wyndham, George Seymour, Viscount Beauchamp, and more
Grandchildren: Algernon Seymour, 7th Duke of Somerset, Lady Catherine Seymour, Catherine Seymour, and more
Spouse: Elizabeth Percy, Countess of Northumberland (m. 1662–1670)