There is a comment by Feltham in his 1797 tour - "Here I met with my earliest Manks friend, Mr. J. Gelling, with whom, and Mr. Haskins, I had made, in 1796, a tour on foot from London to Richmond, Windsor, Oxford, Blenheim, and Stowe." - Mr Haskins might well be the Joseph Haskins mentioned in letter9 in same book who appears to be linked to Mrs. Macaulay of Bath an intimate friend of Bishop Wilson's son
Other than this mention I have no other mention in my database.