A slight twist to Janet Shearer Robertson. I found her death notice and it said dearly loved wife of Archibald Robertson. Wife that can't be right. I searched for a marriage and still I can't find anything, so I ordered her death certificate which arrived last night. Sure, enough it states she was wife of Archibald Robertson. Did they actually marry? He went on to marry Dianah Mackay and had one son. Interesting.
I would say this is his adopted daughter Janet Shearer Robertson that married just by coincidence an Archibald Robertson .
The 1891 census lists them next door to the father Archibald Robertson his occupation
Customs Officer as stated in other census records
Janet Shearer Robertson husband is an insurance agent on the 1901 census he is listed as widower ( insurance agent )
Getting a copy of the marriage 1887 would be the best thing to do to see what it says
Rosie