 By March 1098 he was governing Traba, from which his family was to derive its recurring toponym.In royal charters he is sometimes called "comes de Ferraria" (count of Ferreira) and sometimes "comes de Traba" (count of Traba).Pedro was a supporter and vassal of Raymond of Galicia and his wife, Urraca, whom he probably knew from his time in the household of her father, Alfonso VI.