I'm doing some research into my ggrandfather John Sinclair and his wife Margaret.
John, Margaret and infant daughter Jessie? emigrated to Canada from Scotland in 1884.
John b. 10 Sep 1841 (according to Canada census records)
Margaret b. 3 Nov 1852
Jessie b. 10 Jun 1883 country of birth listed as Scotland
According to Canadian birth records from children they had in Canada - Margaret's maiden name was Sandison.
I found a marriage record with the following information (on SP)
1882 Marriages in the District of Kirkwall in the County of Orkney
25 Aug 1882
John Sinclair (farmer - bachelor) age: 35 - usual residence Tannach, Wick - parents William Sinclair (farmer - deceased) & Marjory Sinclair (maiden: Sinclair - deceased)
Maggie Sandison (spinster) age: 25? - usual residence: ??, Wick - parents Donald Sandison (farmer) & Janet Sandison (maiden: Miller?)
I believe this John Sinclair might have been born on 10 Sep 1841 (regardless of age given above). This 10 Sep 1841 John is listed on several Scottish Census in Caithness (along with parents and siblings) and on IGI
I cannot find any evidence of the birth of Jessie so far.
Based on this I feel it is possible that the John Sinclair who emigrated to Canada is the same person born in Caithness on 10 Sep 1841. I suppose I'm interesting in the combined wisdom of the group here.
I also found a John Sinclair, Margaret Sinclair and an infant daughter (transcribed as Janet) in the passenger lists for the ship Grecian departing Glasgow 1884-05-26 - arriving Montreal 1884-06-05 - names are transcribed as "Sinclair, jno" and "Sinclair, Mrg". The ages given are correct (42 and 31). The image is pretty really hard to read though