He went in secret to the palace at Coimbra, where Inez and the infante resided, accompanied by his three familiars, and by others who agreed with them.
Pedro's connexion par amours with Inez would of itself have aroused no opposition.
Tradition asserts that her father, Don Pedro Fernandez de Castro, and her mother, Dona Aldonca Soares de Villadares, a noble Portuguese lady, were unmarried, and that Inez and her two brothers were consequently of bastard birth.
The children of Inez shared her habit of misfortune.
In 1341 the two girls left Penafiel; Costanca's marriage was celebrated in the same year, and the young infanta and her cousin went to reside at Lisbon, or at Coimbra, where Dom Pedro conceived that luckless and furious passion for Inez which has immortalized them.
The story of the exhumation and coronation of the corpse of Inez has often been told.
The beauty and tears of Inez disarmed his resolution, and he turned to leave her; but the gentlemen about him had gone too far to recede.
The three murderers of Inez were sent out of the kingdom by Alphonso, who knew his son too well not to be aware that the vengeance would be tremendous as the crime.
Diniz, eldest son of Inez de Castro, claimed the throne and invaded Portugal in 1398, but his supporters were easily crushed.
The later years of his reign were darkened by the tragedy of Inez de Castro.