Original sentence: He was the last Count of Asturias in Oviedo and was succeeded by a castellan, a novus homo, perhaps in an ecclesiastical–royal effort to curtail the power of the Asturian aristocracy
Edited sentence: He was the last Count of Asturias de Oviedo and was succeeded by a castellan, a novus homo, perhaps in an ecclesiastical–royal effort to curtail the power of the Asturian aristocracy