"I appreciated a previous posters condensing reasons down to the following:
It seems the prevailing theories for the second s of Douglass are
1) Clerical (3rd party) errors
2) Illiteracy errors (self errors)
3) Disambiguation between clans (Black and…"
Which Douglas line are you researching? Dates and places help making connections.
William George Douglass Born circa 1768 (don't know where). Stole 4 silver pints from a John Gamble and was sentenced (in York???) 31st July 1802. Transported to Australia aboard the Coromandel 1804. My 37 marker yDNA test on Family Tree has not thrown up ANY matches so far.
Thanks Daryl, the line that my family had traced seems to need more research. Herbert Wallace Douglas (supposed son of Henry) was married to Frances Ellen Noble and Henry was married to Catherine Hickson.
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?