Portugal, Kingdom of / Dom Pedro I (King Pedro I)

Peter I (Portuguese: Pedro I), called the Just or the Cruel (Portuguese: o Justo, O Cruel), was King of Portugal and of the Algarves from 1357 until his death. He was the third but only surviving son of Afonso IV of Portugal and his wife, Infanta Beatrice of Castile.

Peter was the father of Ferdinand I of Portugal and John I of Portugal. John was the Master of the military order of Avis, and he would become the founder of the Avis dynasty after the 1383-85 Crisis.