3.11.1793 at Perry's / 24.11.1793 there / 30.11.1793 at Wright's / 5.11.1794 at Perry's / 26.3.1795 at King's with Newtons / 12.7.1795 Godwin calls on him / 8.8.1795 he (& Newton) call on Godwin / 30.12.1795 he calls, then Godwin dines with Newton / 27.1.1796 meet Newton & Barnes / 12.2.1796 again /23.5.1796 Barnes calls / 28.6.1796 again / 8.9.1796 again / 10.9.1796 again / 26.10. 1796 meet Barnes / 25.4.1797 Barnes calls / 1.5.1797 at Wilton's with Grays (this was after James Gray's death and may have been his brother and sister Alexander and Elspet) / 26.8.1797 Barnes calls / 29.8.1797 again / 30.8.1797 again / 18.9.1797 again (not in) / 21.9.1797 Barnes breakfasts with Godwin / 2.10.1797 Barnes calls / 9.10.1797 again / 20.10.1797 again / 21.11.1797 again / 1.1.1798 meet Barnes / 14.2.1798 Barnes calls / 15.2.1798 adv Barnes (& Perry) at Masquerade / 19.6.1798 Barnes calls / 29.10.1798again. Then a long gap till on 16.2.1811 Godwin seeks Barnes / 18.2.1811 calls on Barnes / 11.3.1814 Barnes adv at Hill's / 23.3.1815 Charles Clairmont from Barnes / 27.3.1827 seek Barnes / 4.4.1827 call on Barnes
The four appearances in 1793 and 1794 were all associated with Perry (and other associates of Perry's like Gordon and Gillies). Barnes also appeared in 1798 at a Masquerade with Perry. Five out of six entries in 1795 and early 1796 were associated with Newton. So possibly there were two Barnes, or maybe Barnes developed a friendship with Newton. But the Barnes at Perry's is likely to have been John Barnes, stockbroker who was executor of the 1796 will of Perry's partner James Gray. A John Barnes signed the Declaration of the Friends to the Liberty of the Press (Dec 1792 - Mar 1793) and also that of the Society of the Friends to the People 11.4.1792. In 10.2.1794 a John Barnes (presumably not the stockbroker) was keeper of a coffee house in Compton Street where the London Corresponding Society met (Thale), but in general Godwin did not socialise much with the LCS members. And a John Barnes attorney was in the 1798 Law List. A John Barnes stockbroker of Cornhill died in 1782 but his will (PCC) mentions no son, or relative called John.