King of Castile (1504–06). The son of Maximilian I, Philip I inherited Burgundy in 1482 and took over from his father's regency in 1494. His marriage to Joanna (the Mad) of Spain in 1496 brought the Habsburgs a dynastic link with Spain. When Queen Isabella I died in 1504, the pair inherited Castile. His wife's increasing madness enabled Philip I to assume considerable power as king consort. He died of fever soon after his arrival at Castile, his claims passing to his son, who became Charles V.
Subjects: Early Modern History (1500 to 1700).