Pedro Girón Acuña Pacheco

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Pedro Girón Acuña Pacheco (1423–1466), was Master of the Order of Calatrava (1445–1466), 1st Lord of Ureña and Osuna, and an important political figure at the court of Henry IV of Castile.

He was the younger brother of

At the age of 22 he became Master of the military Order of Calatrava, and received in 1448 the strategic town of

Together with his brother and uncle, he was the de facto ruler of Castile, until 1461 when

King Henry IV then offered the hand of his half-sister Isabella in marriage to Pedro. But when Pedro travelled to Madrid at the head of a 3,000-strong force to negotiate the marriage, he suddenly fell ill and died.

Children

As Master of the Order of Calatrava, Pedro was not allowed to marry. Despite this, he had four children with Inés de las Casas who were legitimized by Pope Pius II in 1459, with the support of King Henry IV.

• Alfonso (c. 1454 – 1469), 1st Count of Ureña, died at the age of 16.
• Rodrigo, (1456–1482), succeeded his father as Master of the Order of Calatrava. Died in battle during the War of the Castilian Succession.
• Juan (c. 1456 – 1528), 2nd Count of Ureña. Had issue.
• María