2.8.1810 M(ary) J(ane) for Bishopsgate, w. F(anny) / 6.8.1810 M(ary) J(ane) & F(anny) from Bishopsgate
The event tag on both above dates on GD website says Mary Jane Godwin visited Bishopsgate in the East End of London for four days. Given that Bishopsgate in London was hardly more than a mile from Skinner-st and that Godwin had been to Bishopsgate Heath in Windsor Forest on 1.7.1810, where apparently the Boinvilles or the Newtons were his hosts, it seems more likely to me that that was where Mrs Godwin and Fanny had gone for a break. These were the only three mentions of Bishopsgate in Godwin's diary