Catherine Sedley, Countess of Dorchester (b. 1657)
Catherine Sedley, Countess of Dorchester, Countess of Portmore (21 December 1657 – 26 October 1717), daughter of Sir Charles Sedley, 5th Baronet, was the mistress of King James II and VII both before and after he came to the throne. Catherine was noted not for beauty but for her celebrated wittiness and sharp tongue.