Thank You, SueDee
Its beginning to look like I may have to make a road trip to that area to look into local marriage and divorce records.
From the information I have, they were married around 1928 when she immigrated to the US, and in a church ceremony. That being said, it was probably in or near her home town.
I have no information about when or where they may have divorced, or who filed for divorce, but I know my father remarried in about 1936 or 1937.
I'm going to try to research local courthouses, where Alex grew up, as it is nearest to where I live. then travel further, and to more metropolitan areas as I need. The Sarnia area being a bit smaller than the Detroit area.
I hope all is well with you, and you have wonderful Holidays.