Eleanor of Aragon, Queen of Castile

Leonor of Aragon
A statue of Queen Eleonor praying at her Sepulcher
Queen consort of Castile and León
Tenure	1379–1382
Born	20 February 1358 Santa Maria del Puig
Died	13 August 1382 (aged 24) Cuéllar
Spouse	John I of Castile
Issue	Henry III of Castile Ferdinand I of Aragon
House	House of Barcelona
Father	Peter IV of Aragon
Mother	Eleanor of Sicily
Religion	Roman Catholicism

Eleanor of Aragon (20 February 1358 – 13 August 1382) was a daughter of King Peter IV of Aragon and his wife Eleanor of Sicily. She was a member of the House of Aragon and Queen of Castile by her marriage.

Eleanor was the youngest child and only daughter of her father by his third marriage. Eleanor was a sister of John I of Aragon and Martin of Aragon. She was a half-sister of Constance, Queen of Sicily, Joanna, Countess of Ampurias and Isabella, Countess of Urgell.

On the death of Eleanor's mother in 1375, her father married Sibila of Fortia, who had been Eleanor of Sicily's lady-in-waiting. This caused disagreements between King Peter and his children especially John.

Eleanor's maternal grandparents were Peter II of Sicily and his wife Elisabeth of Carinthia, granddaughter of Henry V, Duke of Legnica and Elisabeth of Kalisz. Eleanor's paternal grandparents were Alfonso IV of Aragon and his first wife Teresa d'Entença.

At Soria on the 18 June 1375, Eleanor married John I of Castile. Her marriage was arranged as part of the arrangements for peace between Aragon and Castile agreed at Almazán on the 12 April 1374 and at Lérida on the 10 May 1375.