MANN, Guillaume (1860- c. 1895) was born in France in 1860 and was active in Montreal, Que. where he practised, at first under his own name, and later in partnership with Elzear P. Courval (as Mann & Courval, active 1893). He prepared the design for St. John's French Presbyterian Church, Ste. Catherine Street East at de Bullion Street, MONTREAL, QUE., 1894-96 (Gazette [Montreal], 17 Aug. 1894, 5, descrip.; C.A.B., vii, Dec. 1894, 154; viii, May 1895, 71; Montreal, Les Eglises, 1981, 266-7, illus.). The initial construction of the church was of such poor quality that a portion of the building subsequently collapsed, and the Chief Building Inspector for the City of Montreal ordered the walls to be demolished and rebuilt. In 1894 Guillaume designed a row of shops and tenements on Bleury Street, MONTREAL, QUE. for the Durand Estate, as well as a grain elevator for the Canadian Produce Co., MONTREAL, QUE. (Le Prix Courant [Montreal], xiv, 20 July 1894, 614). His name should not be confused with that of Eric Mann, another architect active in Montreal during this period.
In 1894 Guillaume Mann became the Editor of a new bilingual monthly magazine called The Montreal Builder (see The Gazette [Montreal], 18 Aug. 1894, 3). Intended for those in the building trades, the first issue featured engraved views of his own design for the French Presbyterian Church, as well as his plans and specifications for a new grain elevator at Mile End. It is unclear how long this journal remained in print.