In Godwin's 1796 list (At top right of diary Vol VII f 45v and at top of f 47r see my entry for 1796 list)
John Logan DNB 1747-88 came to London October 1785. I think he worked with Godwin on Political Herald but need to check my source for this. According to the DNB he worked with Gilbert Stuart on the English Review which Stuart edited as also the Political Herald