I had not come across the name Bolt before (as a Douglas name), however, I note that a John Bolt Douglas features in Who's Who in Jamaica, c1945 (he was dead by then, I think) - but have not been able to find out more - yet! Could this be your great, great grandfather?
Google snippet: ...Born Grantham, Clarendon, April 23, 1873, son late John Bolt Douglas, Educator, and Frances Matilda, daughter James Wright his wife. Educated by private tuition. Elementary Schools and Howard University 1902-1905; started career as an ...
The more information you can give about the people you mention, the more chance there is of someone else connecting with your family.
Dates and places of births, deaths and marriages all help to place families.
Professions also help.
'My great-grandmother mother was a Douglas from Montrose' does not give many clues to follow up! But a bit of flesh on the bones makes further research possible. But if we are told who she married, what his profession was and where the children were baptised, then we can get to work.
Maybe it is time to update the information in your profile?