
A tragic heir whose descent into madness and death in his father's dungeon became a powerful symbol of Spanish royal tyranny.
Don Carlos was the long-awaited male heir to Philip II of Spain's vast empire. His mother died days after his birth. As he grew, reports described a young man of erratic temperament and physical ailments, his behavior growing increasingly volatile. In early 1568, his father ordered his arrest. Carlos spent his final six months in solitary confinement in a castle room, dying under mysterious circumstances at twenty-three. His story became propaganda for Spain's enemies and later inspired major works by Schiller and Verdi.
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He was engaged to Elizabeth of Valois, who ultimately married his father, Philip II, instead.
He suffered from a hunched back and a leg that was shorter than the other, possibly due to inbreeding.
His full title was Prince of Asturias, the traditional title for the heir to the Spanish throne.
“My father's empire is a cage, and I am its only key.”