“ Charles, 6th earl (1543–1601) , eldest son of the 5th earl by his first wife Jane, daughter of Thomas Manners, 1st earl of Rutland, was brought up a Roman Catholic, and was further attached to the Catholic party by his marriage with Jane, daughter of Henry Howard, earl of Surrey. He was a member of the council of the north in 1569 when he joined Thomas Percy, 7th earl of Northumberland, and his uncle Christopher Neville, in the Catholic rising of the north, which had as its object the liberation of Mary, queen of Scots. ”

“ If Westmorland betrayed them he at least had no share in their execution. Thenceforward he was busily engaged in negotiating with the Scots and keeping the peace on the borders. He did not play the part assigned to him by Shakespeare in Henry V., for during Henry's absence he remained in charge of the north, and was a member of Bedford's council. He consolidated the strength of his family by marriage alliances. His daughter Catherine married in 1412 John Mowbray, second duke of Norfolk, brother and heir of the earl marshal, who had been executed after Shipton Moor ”