Anne Mortimer, Countess of Cambridge English countess (1388–1411) Parents Alianore Holland, Countess of March Roger Mortimer, 4th Earl of March Children Henry of York Richard of York, 3rd Duke of York Isabel of Cambridge, Countess of Essex Siblings Edmund Mortimer, 5th Earl of March Lady Eleanor de Mortimer Joyce de Cherleton Roger Mortimer Joan de Cherleton Partners Richard of Conisburgh, 3rd Earl of Cambridge