Hello Christina
I am searching for Donald Seaton, not Duncan Seaton. In the Scottish Briths and Marriages I can find very few Donald Seatons at all. I have compiled a list of all the Donald Seatons who were born in the right time frame to have fought at the Battle of Culloden, and who could thereafter have had a grandson Alexander, born 1766.
I find one Donald Seaton born 1722 to John Seaton and Margaret McLauchlane. Such a Donald could have fought at Culloden in 1746, either having married in the early 1740s, and his son (name unknown) could still be the father of Alexander Seaton, born 1766. This latter date is pretty certain (both 1841 census and gravestone confirm appropriate age).
The generations between Donald in 1722 and Alexander in1766 would have to be short, 44 years for 2 generations -- not impoisslbe though. I'm hanging my hopes on this connection.
PS. I also have Camerons in my Scottish family, all from Moulin, Perthshire. They all emigrated to Canada in 1835 or so.
Regards,
Jean Frane