From the 1900 US federal census:
McHenry, North Dakota
Arthur Valentine, head, 25, married 2 years, born Aug 1874 in England, parents born England, immigrated in 1888, farmer
Alwelda Valentine, wife, 23, married 2 years, mother of 0 children, 0 alive, born Mar 1877 in Canada, parents born Canada, immigrated in 1886
Arthur I Peters, brother-in-law, 12, born Feb 1888 in North Dakota, parents born Canada
Malinda Peters, mother-in-law, 50, born Oct 1849 in Canada, father born Holland, mother born Scotland, immigrated in 1886
Malinda lists herself as being married, not a widow on this census so she and Arthur may have been visiting Alwilda on census day and not living with her.
From the 1906 census of Manitoba, Saskatchewan and Alberta:
Strathcona, Alberta
Malinda Peters, head, 56, widow, born Ontario
Durwood Peters, son, 21, born Ontario
Arthur Peters, son, 18, born Ontario
Norah Peters, daughter, 15, born Ontario
This appears to be Malinda with son, John, on the 1911 Canada census (lines 19 through 26):
http://automatedgenealogy.com/census11/SplitView.jsp?id=14957From the 1916 census of Manitoba, Saskatchewan and Alberta:
Bow River, Alberta
Archie Petters, 28, head, born United States, farmer
Ruth Petters, 5, sister, born Alberta
Malinda Petters, 66, mother, born Ontario
It says Ruth is Archie's sister but that is not possible.
By the way, the household immediately after Archie's consists of:
Wesley Wagar, 35, head, born Ontario, farmer
Nora Wagar, 25, wife, born United States
It seems quite possible that Nora Wagar is Malinda's daughter.
Jacquie