Margaret - this is not exactly what you are looking for but may be a related family. The Neepawa heritage book has a short bio contributed by Lu Buchan of Winnipeg. Hopefully something will ring a bell for you:
My father William C. Coulter and mother Isabella Stinson were both born in Ireland seventy five miles from Belfast near Armagh in the county Tyrone. My parents never met in Ireland but they both had relatives in the United States and it was there they met in Philadephia while visiting their relatives. Our parents were married in 1888. Some years after their marriage our parents decided they wanted to come to Canada. William and Isabella along with Annie the oldest of our famly came to Neepawa along with our grandparents. Cold weather and little money made conditions most unbearable but our folks decided if other settlers could survive the hardships they could do likewise. When our famly arrive in Winnipeg it was a city of tents.
Upon coming to Neepawa our parents settled on Sec 21-15-15 in the municipality of Rosedale. This farm was where the rest of our family was born. I had 3 sisters and 4 brothes. Our education was obtained at Mountain View school. Our father was a plasterer by trade and he was able to secure work in the small towns plastering the homes that grew like mushrooms. We had a good bringing up and were all happy and healthy.
Annie married R.G. Buchanan, Rob married Cassie McCauley. Jean married Jack McFadyen. Flossie maried Roy Clyde. Ed married Lucie Buchanan. Fred married Belle Urquart. Lu married Roy Buchan and Carl married Evalena Munstein.
The Coulter clan are all deceased except Lu, Rob's second wife Ruby Hamilton, Fred's wife Bell and Carl's wife Evalena. Our famlies are widely scattered over Western Canada and the United States.
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You might also check the Dominion Land Grants at the Cdn National Archives website to see if your Coulter family homesteaded in the area.
Bette