From 1777 to 1783 James Boswell was a columnist for the London Magazine, writing a total of seventy essays under the pseudonym the Hypochondriack.
Adam Craufurd of Dalleagles and Polquhairn
Adam CraufurdBorn possibly 1712
Died possibly 1794
The last Craufurd of Dalleagles. At his death he was referred to as Craufurd of Polquhairn.1
Boswell visited Polquhairn as the first stop on his harvest jaunt of 1762, together with James Chalmers on September 14, 1762.
The age of Craufurd is inferred from (Link), but I don't know for sure if he is in fact the Craufurd of Dalleagles who was (presumably) visited by Boswell.
Note 1: According to The Commissariot Record of Glasgow - Register of Testaments