James Gairdner and John Horace Round, 1911 Encyclopædia Britannica, Volume 21… (1911)
“ The 1st earl of Northumberland, father of the famous Hotspur, Sir Henry Percy (q. v.) , was killed at Bramham Moor in 1408, while in arms against the king, and his title and estates were forfeited. But, by an act no less gracious than politic, Henry V. restored them in 1414 to this earl's grandson, Henry (1394-1455) , then a prisoner with the Scots, whose l1berat1on he had no difficulty in procuring from the duke of Albany during the time of James I.'s captivity. ”
