Brown Family Genealogy

Brown's from Saskatchewan Canada

My mother-in-law's maiden name is brown and all we have is her dad's info 

John William Brown

Born: 25 Jun 1913 in Prince Albert, Saskatchewan, Canada 
Died: 27 Mar 1976 in North Vancouver, British Columbia, Canada 
His father may also have been John William Brown but my mother-in-law has no recollection of his family. He eventually moved to Edmonton where he married Sarah Rosentreter. together they had 4 children all born in Edmonton
  • Norman Edward Brown born 1946
  • Jane Marion Brown born 1948
  • Betty Ann Brown born 1951
  • Jack Alvin Brown born 1956

Any help to find siblings or parents of John William Brown appreciated. I have tried finding him in the
1916 Canada Census of Manitoba, Saskatchewan, and Alberta but no such luck.