Written on back and below of photo:

John MacKenzie 

Possibly John MacKenzie born 15 April 1871 to Jane MacKenzie and George McAuley MacKenzie.  He married Kate Goldie Hewitson Lindsay on the 19th of November 1902 at Westbridge, British Columbia.  They moved to Calgary, Alberta where John was a farmer.  John and Kates children were: John Lindsay, George McAuley, Jane and Agnes. 

John MacKenzie died in January 1950, Calgary, Alberta.