Manuel I of Portugal
Manuel's mother was the granddaughter of King John I of Portugal, whereas his father was the second surviving son of King Edward of Portugal and the younger brother of King Afonso V of Portugal. In 1495, Manuel succeeded his first cousin, King John II of Portugal, who was also his brother-in-law, as husband to Manuel's sister, Eleanor of Viseu.
History of Portugal (1834–1910)
On 1 February 1908 King Carlos I and the royal family returned to Lisbon from Vila Viçosa. After leaving the train in Barreiro and traveling by boat to Lisbon, they were met in the city center by members of the court, Franco government (including the Prime Minister) and some royalist citizens. Returning to the royal palace, their landau passed through the Terreiro do Paço, where two republican activists, Alfredo Luís da Costa and Manuel Buíça, fired on the open carriage in which they were traveling. Five bullets were fired from a rifle carried by Buíça (a former army sergeant), hidden under his long overcoat: three of these struck and killed the king, while another fatally wounded the heir to the throne Luís Filipe. During the turmoil the police killed the two assassins, as well as an unfortunate bystander. The royal carriage was driven to the nearby Naval Arsenal, where both the king and the prince were declared dead. Manuel, the king's youngest son, was quickly acclaimed King of Portugal.