The father of Vivion de Valera led the introduction of what document?
Vivion de Valera Vivion de Valera (13 December 1910 – 16 February 1982) was an Irish scientist, businessman, lawyer and politician. He was the eldest child of Éamon de Valera and Sinéad de Valera and was named after his paternal grandfather, Juan Vivion de Valera.
Miguel I of Portugal "Dom" Miguel I (] ; English: "Michael I"; 26 October 1802 – 14 November 1866), "the Absolutist" (Portuguese: ""o Absolutista"" ) or "the Traditionalist" (Portuguese: ""o Tradicionalista"" ), was the King of Portugal between 1828 and 1834, the seventh child and third son of King João VI (John VI) and his queen, Carlota Joaquina of Spain.