Second Earl of Northumberland (1414 - 1455).
Captured by English privateers while on a ship to France with James, son of the King of Scotland. He was then held in Windsor Castle and became a close friend of Henry Prince of Wales, who later became King Henry V. As a result in 1414 the honours and estates lost at the Battle of Bramham Moor in 1409 were reinstated to Henry Percy, and he became the Second Earl of Northumberland.
He was appointed General Warden of the Marches whenever Henry V or later Henry VI were absent in France on battle campaigns.
Led campaigns against the Scots in 1436 and 1448.
In 1452 the Wars of the Roses began. Henry sided with the House of Lancaster, but was killed at the first battle of the wars at St. Albans in 1455.