Romeo and Juliet has nothing on the tale of Peter I of Portugal and his lady love, Inês de Castro. Passion, drama, blood, and despair mark this tragic real-life story. Bring out the tissues, because trust us, anyone who reads these facts is going to need them. 1. He Was A PawnBeing the rightful heir to the Kingdom of Portugal sounds like a pretty sweet deal on the surface, but Peter may beg to differ. Born on April 8, 1320, to Afonso IV of Portugal and Beatrice of Castile, Peter quickly found himself the pawn in a game of political intrigue and marriage alliances, even before he hit his teenag…