Complex sentence: Lothair's death deprived the southern barons of their support, however, and Roger thickly reconquered his territories and in 1139 the papal-imperial duke of Apulia, Ranulf of Alife, died.
Split into simpler sentences: Lothair's death deprived the southern barons of their support, however, and Roger quickly reconquered his territories. In 1139 the papal-imperial duke of Apulia, Ranulf of Alife, died.