Personal Union - Portugal

Portugal

• Iberian Union with Spain from 1580 to 1640, under Philip II (also known as Philip I of Portugal), his son and grandson.
• Personal union with Brazil, under Peter I of Brazil (Peter IV of Portugal), from 10 March 1826 to 28 May 1826. Peter was the Prince Royal of Portugal, Brazil and the Algarves when he declared the independence of Brazil in 1822, becoming its first emperor. When his father (John VI of Portugal) died, Peter became also king of Portugal for only a few weeks, after which he abdicated the Portuguese throne in favor of his older daughter, Princess Maria da Glória.