For many years I have searched for a John Buxton married to Mary Ann Macrae. Could you be searching for them too?
According to my aunt our John and Mary Ann married in 1885 and had a son Donald who died at Galliploi. There could also be a son John. Mary Ann was born in Kintail, Scotland and I think I have her in 1881 census as nurse to a family called Drew, he was a Calico printer in Macchester.
Sorry for going on, hope some of that might join up with your search. Hope to hear from you. Tina