Eleanor was originally betrothed to Frederick, illegitimate son of Henry II of Castile, however this engagement was broken off. Upon the death of the sickly John I of Castile on October 9 of 1390 the Regency Council addressed the issue of the heir presumptive, Infante Henry at the time eleven years of age and his brother Infante Ferdinand, who was then ten years. It was agreed that Ferdinand could not marry before his brother Henry reached the age of fourteen. Then he would be granted the privileges and social policies majority. Peter I of Castile was murdered in March 1369 by his bastard brother Henry. The representatives of the clergy, the nobility, the state of the gentry and merchants, as well as the authorized legal representatives of some Castillian cities agreed that Henry's grandson Infante Henry should marry the granddaughter of the murdered Peter, the English princess Catherine of Lancaster, daughter of John of Gaunt. As the elder brother, Henry, fulfilled these requirements then so should his brother Infante Ferdinand, with a good wife who was honorable and rich. It was then heard that Eleanor of Alburquerque was sixteen and old enough to marry. She expressed her agreement in marriage but could not take place as Ferdinand was not yet ten years old. She owned the towns of Haro, Briones, Vilforado, Ledesma with the five towns, Albuquerque, the Codesera, Azagala, Alconchel, Medellin, Alconétar and Villalon, a gift from John I of Castile. This made Eleanor a very attractive offer to Ferdinand. In 1394, Eleanor and Ferdinand were married. They had seven children:
Sancho of Aragon. Created Grand Master of the Orders of Calatrava and Alcántara after 1412.
Later life
In 1412, Ferdinand and Eleanor became King and Queen of Aragon after the Compromise of Caspe. However they reigned for only four years, when Ferdinand died in 1416, aged 36 years. Eleanor, who was then 42 years old, retired to Medina del Campo. In 1435 her sons, the princes of Aragon were taken prisoners of the Genoese after the naval battle of Ponza. The Royal Palace of Medina del Campo, birthplace of her husband and her children, was transformed into the Convent of Santa María la Real. There, Eleanor witnessed her children fighting against the royalist party led by Álvaro de Luna. Eleonor lost some of her possessions as a benefit for the latter. Eleanor died in Medina del Campo, province of Valladolid, in 1435. Her grave is in the Convent of Santa María la Real, in a simple grave on the floor. It has a tablet that is stone Toledo dark, with the Royal Arms carved on it.
