Everything seems to fit except I don't think that Anne (MacKay)Cumming (Grannie) went to Canada. Her children all moved to the Boston,Ma.USA area. Adam Cumming was my Great Greatfather but I have never heard the Cummingham used. All of my grandmothers brothers went by the name Cumming.The birth date,marriage date and date of death are all in the right time frame. My Grandmother I believe was the oldest, she was born on or about 4/24/1880. The youngest John was born in 1895 and was in the Boston Newspaper in 1995 for reaching his 100th birthday.