We have it in Schiller's dramas in an appreciable degree, and consequently they are popular; also in the Oedipus Rex of Sophocles.

He had become Charles Rex from the day she had first bestowed the title upon him.

John used to entertain the tenants, on Pitfour's brief visits to his estate, with numerous anecdotes of his master and Mr. Pitt; but he always prefaced them with something in the style of Cardinal Wolsey's Ego et rex meuswith "Me, and Pitt, and Pitfour," went somewhere, or performed some exploit.