The father of Vivion de Valera led the introduction of what document?
Éamon de Valera Éamon de Valera ( ; ] ; first registered as George de Valero; changed some time before 1901 to Edward de Valera; 14 October 1882 – 29 August 1975) was a prominent politician and statesman in 20th-century Ireland. His political career spanned over half a century, from 1917 to 1973; he served several terms as head of government and head of state. He also led the introduction of the Constitution of Ireland.
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.