Joanna of Castile and Aragon, also known as Juana, Jehanne or Joan, was called "the Mad" or "la Loca" because of her father's allegations that she was mentally ill, his rationale for ruling Castile after her mother's death in Joanna's name.
By Jone Johnson Lewis, About.com Guide
Joanna of Castile and Aragon, also known as Juana, Jehanne or Joan, was called "the Mad" or "la Loca" because of her father's allegations that she was mentally ill, his rationale for ruling Castile after her mother's death in Joanna's name.