Arnulf de Montgomery Earl of Pembroke (b. 1066) Parents Mabel de Bellême Roger de Montgomerie, 1st Earl of Shrewsbury Children Alice de Montgomery Siblings Roger the Poitevin Hugh of Montgomery, 2nd Earl of Shrewsbury Robert of Bellême, 3rd Earl of Shrewsbury Philip de Montgomery Sibyl of Montgomery Matilda de Montgomery Roger III de Montgomery Partners Lafracoth O'Brien