John Finlayson

Wrote to the Duke of Perth in September 1745 presenting his experience as "a mathematical instrument maker who has studied fortification and gunnery," and requesting an appointment "as an engineer or constructor" (NA SP 36/77/2/35). He was captured at Culloden but returned home to Edinburgh in August 1747 (Prisoners, vol. 2, p. 193). Held in custody in London from January to December 1751 for engraving a map showing Jacobite movements in 1745-46 (NA SP 36/117/2/126; SP 36/161/1/236), after which he was left in a "state of desperation" (SP 36/118/1/29). Forbes was Finlayson's source for much of the information included with the map (see Blaikie, Itinerary, pp. 107-08).