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.
Valentí Almirall i Llozer Valentí Almirall i Llozer (] ; Barcelona, 8 March 1841 – 1904) was a Catalan politician, considered one of the fathers of modern Catalan nationalism, and more specifically, of the left-winged nationalism.