Isabel Despenser, Countess of Warwick

Isabel le Despenser, Countess of Worcester and Warwick, LG was the posthumous daughter and eventually the sole heiress of Thomas le Despenser, 1st Earl of Gloucester by his wife, Constance of York, daughter of Edmund of Langley. She was born six months after her father had been beheaded for plotting against King Henry IV of England (1399–1413).