Hmm, this may be why I am at a dead end.The information that I got came from an older cousin on the Roberts side of the family (James Jackson married Catherine Roberts.)Hazel *my grandmother* would be Tomas McCowans grand daughter. Also, I have James Jackson being born in 1875, which would be about right with your dates.
Do you have any information on the children of Thomas and Hulda?Thanks! Kathy