His father,
Fernando Rodrigues de Castro, was killed in battle in 1304, while fighting against
Infante Philip of Castile, son of
Sancho IV of Castile. On the death of his father, Pedro was sent by his mother to the
Kingdom of Portugal, where he was raised and educated along with
Infante D. Pedro,
Count of Barcelos, an illegitimate son of King
Denis of Portugal. Around the year 1319, Pedro Fernandes de Castro returned to
Galicia and
Alfonso XI of Castile gave him his ancestral manor of
Lemos and
Sarria and appointed him Lord Steward of the realm. In 1330, Pedro accompanied
King Alfonso on his campaign into Granada and led the Christian attack at the
Battle of Teba In 1334,
Afonso IV of Portugal invaded the kingdom of Castile and León, entering through the lands of
Galicia. However, Pedro Fernandes de Castro refused to fight against him, due to the favors he received in the past at the court of Portugal.
Alfonso XI gave him the
County of Trastámara, which the sovereign had intended to give his son
Henry. Due to his military skills, Alfonso XI sent Pedro Fernandes to fight Muslims in
Andalusia, where he fought at the
Battle of Salado in 1340, where tradition refers to Pedro Fernandes de Castro grabbed his spurs of gold from the
Marinid sultan of Morocco,
Abu Al-Hasan Ali ibn Othman. He participated in the
siege of Algeciras in 1342, which he led his retinue in the company of
Martim Fernández de Gres,
Archbishop of Santiago de Compostela. Pedro Fernandes de Castro died in 1342, being a victim of an epidemic during the
siege of Algeciras. ==Marriage and offspring==