Philip I, also known as Philip the Handsome, died in 1506 at the age of 28. He was the son of Holy Roman Emperor Maximilian I and Mary, Duchess of Burgundy. Philip ruled as Duke of Burgundy and King of Castile alongside his wife, Joanna of Castile, from 1496 until his death.
Regal Monarch or Renaissance Powerhouse: The Life and Legacy of Philip I of Castile