Josceline Percy, 11th Earl of Northumberland

Joceline (also Josceline ) Percy, 11th Earl of Northumberland (* July 4, 1644, † May 31, 1670 in Turin ) was an English peer.

He was the only son of Algernon Percy and his second wife Elizabeth Howard. According to the example of his own father, the 9th Earl, his father himself took over a part of the education of his son. Joceline traveled to Italy as a teenager in 1658 and returned back to England. At the coronation of Charles II on 23 April 1661, he served as a Page. On November 4, 1661, he became a member of the Inner Temple. On December 23, 1663, he married Elizabeth Wriothesley, the third daughter of Thomas Wriothesley, 4th Earl of Southhampton. After the death of his father in 1668 he inherited the title and estates. In 1670 he again traveled with his wife, his three year old daughter and his personal physician John Locke to Italy. His pregnant wife, he was sick back in Paris, he traveled to Turin, where he died on May 21 in 1670. A few weeks later his wife suffered a stillbirth.

With his untimely death extinguished the direct line of the house of Percy and the title Earl of Northumberland and Baron Percy. His three year old daughter Elizabeth was the sole heir of his extensive possessions, his wife married on August 24, 1673 in second marriage Ralph Montagu, 1st Duke of Montagu.

Percy was Lord Lieutenant of Northumberland from 1660 and 1668 of Sussex.