Juan I first marriage, to Eleanor of Aragon on 18 June 1375, produced his only known issue :
Enrique (Henry) (4 October 1379 – 25 December 1406), succeeded his father as King of Castile,
Fernando (Ferdinand) (27 November 1380 – 2 April 1416), became King of Aragon in 1412, and
Leonor (Eleanor) (b. 13 August 1382), died young.[2]
Sources
WikiTree profile Castile Leon-3 created through the import of jefflorrie(1).ged on Sep 10, 2011 by Jeff Johnson. See the Leon-3 Changes page for the details of edits by Jeff and others.
Source: S-2087525741 Repository: #R-2142232775 Title: Ancestry Family Trees Publication: Online publication - Provo, UT, USA: Ancestry.com. Original data: Family Tree files submitted by Ancestry members. Note: This information comes from 1 or more individual Ancestry Family Tree files. This source citation points you to a current version of those files. Note: The owners of these tree files may have removed or changed information since this source citation was created. Page: Ancestry Family Trees Note: Data: Text: http://trees.ancestry.com/pt/AMTCitationRedir.aspx?tid=27418815&pid=5688