Isabel le Despenser, Countess of Worcester

Isabel le Despenser, Countess of Worcester and Warwick, LG (26 July 1400 – 1439) was the posthumous daughter and eventually the sole heiress of Thomas le Despenser, 1st Earl of Gloucester (died 1399) by his wife, Constance of York. She was born six months after her father had been beheaded for plotting against King Henry IV (1399–1413).

Isabel married twice, successively to two identically named first-cousins, grandsons of Thomas de Beauchamp, 11th Earl of Warwick:

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