As you can see the name Doling isn't prevalent in Regina, or Sask and although it doesn't cover them all... there are only about a dozen listed on that site for all of Canada...
http://www.canada411.ca/search/si/1/doling/ Most in B.C. & Ontario, but there is one still in Sask if the other doesn't pan out...
So if there is a marriage for Florence May it needs investigating...as there likely isn't another...
Did you get the actual image, or was it a transcription/newspaper...?
We have someone in sask. but with privacy laws, still may not find more than what we already have...
So hope that you can contact someone who is related ( & doesn't think you are some nutball ...heheh...not everyone is as thrilled with genealogy & family history as we are....)
all the best... J.J.