The only wife of a Welsh prince definitively shown to have used the title is Eleanor de Montfort, the English bride of Llywelyn ap Gruffydd, the last native Prince of Wales. Eleanor died shortly after giving birth to their only child, Gwenllian, who was taken prisoner as an infant following her father's death. Gwenllian was the only native Welsh princess to be described as Princess of Wales; Edward I had her raised in Sempringham Priory in Lincolnshire, far from where any Welsh rebels could find her, and once appealed to the Pope to increase funds to the priory by writing that "...herein is kept the Princess of Wales, whom we have to maintain."[6]