Luís Filipe, Prince Royal of Portugal

Dom Luís Filipe, Prince Royal of Portugal, Duke of Braganza was the eldest son and heir apparent of King Carlos I of Portugal until their assassinations. Born in 1887, when his father was still Prince Royal, he was styled Prince of Beira at birth. After his paternal grandfather King Luís I of Portugal died, he became Prince Royal of Portugal and Duke of Braganza as heir apparent to the throne. Following the Lisbon Regicide that saw him and his father killed, his younger brother Manuel II became the last King of Portugal. Some historians suggest he was king as Luís II for a few minutes between his father’s death and his own, though few if any official lists of Portuguese monarchs include him. Portuguese law only acknowledged the reigns of kings who were acclaimed by the parliament.