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Conrad of Montferrat (Italian: Corrado del Monferrato; Piedmontese: Conrà ëd Monfrà) (c. 1146 – 28 April 1192) was a nobleman, one of the major participants in the Third Crusade. He was the de facto King of Jerusalem (as Conrad I) by virtue of his marriage to Isabella I of Jerusalem from 24 November 1190, but officially elected only in 1192, days before his death. He was also the eighth Marquess of Montferrat from 1191.