James Boswell's uncle John was a member of a sect known as the Glasites.
Adam CraufurdBorn possibly 1712
Died possibly 1794
The last Craufurd of Dalleagles. At his death he was referred to as Craufurd of Polquhairn.1
Life with Boswell:
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