Earl Scots or , Cornish . An earl has the title "Earl of [X]" when the title originates from a placename, or "Earl [X]" when the title comes from a surname. In either case, he is referred to as "Lord [X]", and his wife as "Lady [X]". A countess who holds an earldom in her own right also uses "Lady [X]", but her husband does not have a title (unless he has one in his own right). The eldest son of an earl, though not himself a peer, is entitled to use a courtesy title, usually the highest of his father's
Earl of Tyrone other end of Ireland. He was also given the subordinate title of Viscount Decies; both titles became extinct upon the death of his younger son, the third earl, in 1704; he left an only daughter, Lady Katherine Power, but both titles descended by patent to male heirs only. It was created a final time in 1746 for Marcus Beresford, 1st Viscount Tyrone, son-in-law of the last Power earl. His son was created Marquess of Waterford in 1789, and the title has since been a subsidiary title of the Waterford title. The king or chief of the O'Neills of Tyrone, Conn