Hi
Had a long chat to my other relative helping with research. According to her John Crawford and Mary Morrison must have died between 1881 - 1925.
We know they are in census for 1881 - but nothing after that. 1925 is mentioned because it says they died in some family letters from that time. Sadly, the letters do not mention when or where they died.
I searched SP and cannot find any trace. There are names but it is difficult to trace either of them.
