another weird thing in your post #1 william and #4 arthur did not have same wife
william's wife
Laura Jennetta Blanche Black
Birth 11 Dec 1882 in Mountain, Ontario, Canada
Death 1918 in Edmonton, Alberta, Canada
arthur's wife
Mary Meta Elizabeth Black
Birth 28 May 1890 in Mountain, Dundas, Ontario
Death in Edmonton, Alberta, Canada
same parents for laura & mary