After Blanche's death in 1441, John retained the crown of Navarre for himself until he died 38 years later, keeping it from his son and elder daughter, Charles IV and Blanche II. Conflict with his son led to the Navarrese Civil War. Though some of the sources regard Charles and Blanche as the legitimate monarchs, the "de facto" king of Navarre was still John II. Eleanor didn't claim to be the queen until her father's death.