Which person, who succeeded in 1071 to the Earldom of Hereford, participated in the last serious act of resistance against William in the Norman Conquest?
Roger de Breteuil, 2nd Earl of Hereford: Roger de Breteuil, 2nd Earl of Hereford (1056 – after 1087), succeeded in 1071 to the earldom of Hereford and the English estate of his father, William Fitz-Osbern. Roger de Breteuil, 2nd Earl of Hereford:  He is known to history for his role in the Revolt of the Earls Revolt of the Earls:  It was the last serious act of resistance against William in the Norman Conquest.
Roger de Breteuil