Henry II (Seville, January 13, 1334 – May 29, 1379 in Santo Domingo de la Calzada), better known as Henry of Trastámara (Spanish: 'Enrique de Trastámara', Galician: 'Henrique de Trastamar'}, 1st Conde de Trastámara, before his coronation, was the illegitimate son of Alfonso XI of Castile and Eleanor of Guzmán, half brother to Peter of Castile . He took the throne after defeating and killing Peter in the Castilian Civil War .
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