Mount - Variation of Mountain: Mass of land prominently elevated above the surrounding terrain, bounded by steep slopes and rising to a summit and/or peaks. ["Mount" preceding the name usually indicates that the feature is named after a person.]
"Tzuhalem Mountain (not Tzouhalem Mountain)" adopted in the 10th Report of the Geographic Board of Canada, 30 June 1911. Form of name changed to Mount Tzuhalem 7 Sepember 1950 on C.3450. Spelling changed to Mount Tzouhalem 27 April 2000, being the long-established, preferred local spelling as confirmed April 2000 by Cowichan Tribes (file V.1.38).
Source: BC place name cards, or correspondence to/from BC's Chief Geographer or BC Geographical Names Office