[4] A testament dated at Burgos on 29 May 1374 shows that King Henry II bequeathed property to his daughter Eleanor as a part of her dowry.

Eleanor did not consent, claiming that she was ill-treated in Navarre and believed members of the Navarrese nobility wished to poison her.

For this reason, Eleanor handed her oldest daughter Joanna over to Charles III to be groomed for her future role as ruler of the Kingdom of Navarre.

On 9 October 1390, Eleanor's brother John died and was succeeded by his minor son Henry as king of Castile.

Eleanor opposed her nephew Henry's accession and she formed the League of Lillo along with her illegitimate half-brother Fadrique and her cousin Pedro.

King Henry opposed the League, besieged Eleanor in her castle at Roa around mid-1394, and obliged her to return to her husband in February 1395.

Joanna died in 1413 without issue and in the lifetime of both her parents, therefore the succession turned to their second daughter Blanche, who would eventually succeed as Queen of Navarre upon Charles' death.