Which Douglas line are you researching? Dates and places help making connections.
Douglass. Later shortened to Douglas. Some ancestors were located in Belfast, Ireland before immigrating to Canada. William Douglas was born in 1828-1838 in Ireland. He died on 11 Nov 1923 in Ontario, Canada. He was married to Jane Sarah Bennett. His son, Daniel James Douglas was born in Nov. 1865 in Ontario, Canada and died in Pennsylvania, USA,on 20 Feb 1938. His wife was Florence Elma Bradley..
Who is your earliest known Douglas ancestor?
family tree dna and ancestry dna tests have been submitted. To date I have received dna matches to trees which include Hon James Douglas, 14th Earl of Morton and James Lord Douglas van Drumlanrig III, whose son was William Douglas, Earl van Queenberry. I have no idea how I am actually connected.
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?