William Fitz Robert, 2nd Earl of Gloucester (b. 1116)
William FitzRobert, 2nd Earl of Gloucester (23 November 1116 – 23 November 1183) was the son and heir of Sir Robert de Caen, 1st Earl of Gloucester, and Mabel FitzRobert of Gloucester, daughter of Robert Fitzhamon, and nephew of Empress Matilda.