Blanche I of Navarre

Blanche I (; 6 July 1387 – 1 April 1441) was Queen of Navarre from the death of her father, King Charles III, in 1425 until her own death. She had been Queen of Sicily from 1402 to 1409 by marriage to King Martin I, serving as regent of Sicily from 1404 to 1405 and from 1408 to 1415. Life Blanche was the second eldest daughter of King Charles III of Navarre and infanta Eleanor of Castile. She became the heiress to the throne of Navarre on the death of her elder sister, Joan, in 1413. Queen regent of Sicily Blanche married firstly Martin the Younger, King of Sicily and Prince of Aragon. They were married by proxy on 21 May 1402 in Catania. Blanche traveled to meet Martin, and they were married in person on 26 December 1402. The bride was about 15 years old and the groom 28. Martin had been in need of legitimate heirs, as he had survived his previous wife and former co-ruler, Queen Maria of Sicily, and their only son. From October 1404 to August 1405, she served as regent of Sicily during the absence of her spouse in Aragon.