Pedro Girón Acuña Pacheco (1423–1466), was Master of the

Order of Calatrava The Order of Calatrava ( es, Orden de Calatrava, pt, Ordem de Calatrava) was one of the four Spanish military orders and the first military order founded in Castile, but the second to receive papal approval. The papal bull confirming the Orde ...

(1445–1466), 1st Lord of Ureña and Osuna, and an important political figure at the court of

Henry IV of Castile Henry IV of Castile ( Castilian: ''Enrique IV''; 5 January 1425 – 11 December 1474), King of Castile and León, nicknamed the Impotent, was the last of the weak late-medieval kings of Castile and León. During Henry's reign, the nobles became ...

. He was the younger brother of

Juan Pacheco Juan Pacheco, 1st Duke of Escalona (1419 – 1 October 1474), better known as Juan Pacheco, Marquess of Villena, was a Castilian noble of Portuguese descent who rose to power in the last years of the reign of Juan II of Castile and came to d ...

and nephew of

Alfonso Carrillo de Acuña Alfonso Carrillo de Acuña (1410, in Carrascosa del Campo – 1 July 1482, in Alcalá de Henares) was a Spanish politician and Roman Catholic archbishop. Life His father was Lope Vázquez de Acuña, head of the Honrado Concejo de la Mesta ...

Archbishop of Toledo This is a list of Bishops and Archbishops of Toledo ( la, Archidioecesis Metropolitae Toletana).

. In the trail of his brother, and a confidant of the young prince and later King

, he became one of the most powerful and rich persons in the Castilian court. At the age of 22 he became Master of the military Order of Calatrava, and received in 1448 the strategic town of Peñafiel, where he built the

Peñafiel Castle Peñafiel Castle is located in Peñafiel, Valladolid Province, Spain. The castle is more than long and encloses an area about wide. Standing in the middle is a high three storey keep. Fernan Gonzalez began construction on the Peñafiel site ...

. When Prince Henry became King in 1454, Pedro received several towns and titles including Lord of Osuna, which would become the powerful House of Osuna. Together with his brother and uncle, he was the de facto ruler of Castile, until 1461 when

Beltrán de la Cueva Beltrán is a Spanish male given name and surname. In non-Spanish speaking countries, the accent is usually omitted as Beltran. It derives from the Germanic words berht ("bright") and hramn ("raven"). It shares this same Germanic origin with Bertran ...

became the new confidant of King Henry IV. As a reaction the brothers and their allies proclaimed the King's half-brother Prince Alfonso as new King, in an event known as the Farce of Ávila. 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, which he legitimized in 1459 by

Pope Pius II Pope Pius II ( la, Pius PP. II, it, Pio II), born Enea Silvio Bartolomeo Piccolomini ( la, Aeneas Silvius Bartholomeus, links=no; 18 October 1405 – 14 August 1464), was head of the Catholic Church and ruler of the Papal States from 19 Augu ...

, with the support of King Henry IV. *

Alfonso Alphons (Latinized ''Alphonsus'', ''Adelphonsus'', or ''Adefonsus'') is a male given name recorded from the 8th century (Alfonso I of Asturias, r. 739–757) in the Christian successor states of the Visigothic kingdom in the Iberian peninsula. ...

(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 The War of the Castilian Succession was the military conflict contested from 1475 to 1479 for the succession of the Crown of Castile fought between the supporters of Joanna 'la Beltraneja', reputed daughter of the late monarch Henry IV of Castile ...

. *

Juan ''Juan'' is a given name, the Spanish and Manx versions of ''John''. It is very common in Spain and in other Spanish-speaking communities around the world and in the Philippines, and also (pronounced differently) in the Isle of Man. In Spanish, ...

(c. 1456 – 1528), 2nd Count of Ureña. Had issue. * María {{DEFAULTSORT:Girón Acuña Pacheco, Pedro 1423 births 1466 deaths Pedro Pedro Grand Masters of the Order of Calatrava