Yates 4.9.1798 at Joseph Johnson's / 4.9.1808 at Bonnycastle's / 29.12.1808 Hilton, Hommey & misses Bonnycastle & Yeates call / 27.4.1813 Yates adv at theatre / 2.8.1816 mrs Yates at Hume's / 21.4.1830 Yates (at Cooke's?) / 8.3.1834 mrs Yates at Gaskel's / 11.4.1835 again

Billings 2.9.1798 at Horne Tooke's

Pitcairn 24.8.1798 at H(olcrof)ts

Likely to have been David Pitcairn DNB 1749-1809, friend of Matthew Baillie. DNB says he went to Portugal for 18 months in 1798

Johnson senr 14.8.1798 at Joseph Johnson's

Joseph Johnson's father was long dead so this was probably his older brother John, who according to A Liberal Publisher was a brewer of Everton who died in 1800. Directories also showed his address as Dale St Liverpool. No PCC will (John Johnson of Warrington PCC 1802 was not him) but probably PCYork will which I access less often

Fontana 14.8.1798 at Joseph Johnson's

Perhaps Gregorio Fontana 1735-1803 colleague of Volta's at Pavia, wrote to Sir Joseph Banks 1787, or Felice Fontana 1730-1805 Florentine scientist. I could find no reference to either of them visiting England at this time in the Italian Biographical Dictionary though I don't read Italian very well

dine at Pinkerton's, tea with him at Philips's 7.8.1798

In GD website the "him" is underlined, but clearly referred to John Pinkerton

Richards 29.7.1798 at H Tooke's / 10.11.1802 call on Richards, 5, Brownlow St / 10.10.1806 at Fox's funeral / 23.3.1807 at Joseph Johnson's, Purser's Cross / 17.11.1809 call on Richards / 11.6.1814 again / 3.10.1814 again / 15.9.1815 again / 23.9.1819 call on T Rodd, chez Richards / 6.10.1823 at Bacon's / 15.5.1824 again / 26.12.1827 call on Dr Richards / 10.1.1828 Dr Richards calls (not in)

Odell at H Tooke's 29.7.1798 / 14.3.1814 call on Odel

Probably Bennet Odell gold laceman who voted Fox & Graham 1802 of Mill St,  Sheridan & Paull 1806 of Pall Mall, Romilly 1818 of Bond St, and died at Brompton in his 65th year, buried 16.3.1839 Holy Trinity Brompton, of Little Chelsea

Morgan 29.7.1798 at Horne Tooke's / 17.10.1799 Morgan at Parry's (King's Bench Prison) with Malkin & Tooke / 29.11.1799 sleep at Morgan's (near Hurley, Berks) / 16.2.1800 at Horne Tooke's (& Malkin) / 25.2.1800 Morgan br (fr?) at (Joseph) Johnson's / 17.5.1800 dines at Milton Gallery (& Malkin)  / 16.5.1805 miss Morgan at Wake's

Ashburnham 29.7.1798 at Horne Tooke's / 11.3.1824 write to E of Ashburnham

John Ashburnham 2nd Earl of Ashburnham died 1812. This was perhaps his son George Ashburnham, 3rd Earl who died 1830, as Godwin was more likely to have written to someone he had once met. See his son George 1785-1813 Hist of Parl & Farington diary