António, Prior of Crato

António, Prior of Crato, sometimes called "The Determined", "The Fighter", "The Independentist" or "The Resistant", was a grandson of King Manuel I of Portugal who claimed the Portuguese throne during the 1580 dynastic crisis. According to some historians, he was King of Portugal for 33 days in 1580. Philip II of Spain prevailed in the succession struggle, but António claimed the throne until 1583. He was a disciple of Bartholomew of Braga.