Charles Harding Firth, Dictionary of National Biography… (1895)
“ Clarendon terms Northumberland ‘the proudest man alive,’ and adds that ‘if he had thought the king as much above him as he thought himself above other considerable men, he would have been a good subject.’ ‘He was in all his deportment a very great man,’ and throughout his political career he behaved with a dignity and independence more characteristic of a feudal potentate than a seventeenth-century nobleman. ”
