(16 March 1791-29 May 1855), clergyman. Born at Quebec. Parents: Joseph Marcoux and his wife Marie Vallière. He was ordained to the priesthood 12 June 1813. From 1813 to 1819 he was priest at St. Regis. In 1815, during this period, along with the Rev. John Bethune, Neil McLean, and the future Bishop Alexander Macdonell, he presented to the government the results of their examination of Indians Lands, GC, from the 4th to the 14th concession. From 1819 to 1855, he was priest at Caughnawaga. He died at Caughnawaga, a victim of a typhoid epidemic. A linguist skilled in the Mohawk language, he published translations and other works in Mohawk, and dictionaries and a grammar for students of the Mohawk language.

Life by Henri Béchard in Dictionary of Canadian Biography, VIII , 618-619 * J.-B.-A. Allaire, Dictionnaire biographique du clergé canadien-français: les anciens (1910) 364-365 * MDict * 1815 report: MacGillivray & Ross 25, 682