Well, here goes, given the constraints that I only have access to free stuff and know little about the Scottish system other than civil registration didn't being until 1/1/1855 ...
Also living with the family in 1851 was Peter Gordon, age 40, wood merchant, born Crathie
1861 census Toll House, Charlestown (4 rooms)
Forbes Ann Hd 64 Toll Collector b Angus, Glenesk
Forbes Ann dau 26 b Aberdeenshire, Birse
Forbes John g/son 8 b Kincardineshire, Banchory Ternan
Duncan William boarder 41 b Aberdeenshire, St Nicholas
(freecen)
8/4/1853 Aboyne birth of James Gordon son of Peter Gordon and Mary Forbes
21/8/1853 Aboyne christening of James Gordon son of Peter Gordon and Mary Forbes
(familysearch)
Marriage 26/11/1859 Aboyne Mary Forbes and George Tough (familysearch)
1861 census Tollhouse Course, Coull (3 rooms)
Tough George Hd 27 Ag Lab/Toll Keeper b Premnay
Tough Mary Wife 23 Ag Lab wife b Aboyne
Tough Mary day 7m Ag Lab dau b Coull
Gordon Ann stepdau 7 Scholar b Aboyne
Reid William boarder 28 Ag Lab b Cluny
(freecen)
Aberdeen and North East Scotland FHS has an index to Aboyne MI's
Stone 87 John Forbes no date
findmypast newspapers has "Montrose, Arbroath and Brechin Review" 27/8/1852 Deeside Gathering - 2nd place David Forbes, Aboyne (tossing the caber or similar), but nothing for John Forbes
There are lots of bits of this jigsaw missing
John Forbes death and burial 1851-1859
What happened to his widow Ann after 1861
What happened to his daughter Ann and son David
What happened to Peter Gordon
Where/when was Ann Gordon (circa 1854) born
My feeling is that the lodger Peter Gordon and teenage Mary Forbes had two children, James and Ann (hopefully not child abuse). Peter died/did a runner. Mary Forbes went on to marry George Tough. Her son James(John) was living with his grandmother in 1861.
She had her daughter Ann living with her and her new husband George Tough in 1861.
Thoughts
In 1851 John Forbes was a proprietor of house - what's that?
I can find Charlestown Road, Aboyne on Streetview, but can't identify number 28. 4 rooms is above average given the number of people living there.
A toll keeper would presumably need to be literate, numerate and honest!
A map of the tolls around Aboyne would be good
Aboyne and Banchory are very picturesque places and were popular with Queen Victoria in the 1850's
Over to you
Valerie