22.5.1807 call on Edwards, engr
Most likely engr was short for engraver (though engineer is possible). The only Edwards engraver I could find active in 1807 was William Camden Edwards (DNB 1777-1855) but he was apparently living in Bungay, Suffolk in 1807 and for most of his life. There was a Humphrey Edwards engineer at 3 Mill-st, Lambeth-walk in 1815 P.O. directory. Richard Edwards printer was at Red Lion-ct, Fleet-st from 1804 and later moved to 6 Crane-ct, Fleet-st till his death in 1829. But probably none of these
2.5.1807 breakfast at Coleridge's, w. Pasley
Charles William Pasley (DNB 1780-1861). See Letters of S T Coleridge. Godwin was lucky to catch him off duty between the battle of Maida July 1806 and the siege of Copenhagen August 1807
6.5.1807 call on Polhill
The only mention of Polhill in Godwin's diary. Godwin had received a letter that morning from Lord Holland (Bodleian MS Abinger c.10 f.37-8) concerning Godwin's attempts to raise a loan, so this call may have been relevant to that project.
11.4.1807 M(arshall) calls for Adkins / 11.8.1807 Bow Street, w. Corbet & T(homas) T(urner), warrant ; Jo. H(odgkins) calls : Adkins calls : M(arshall) & T(homas) T(urner) dine : H(odgkins) & Adkins call ; Bow Street
The second entry above seems likely to have been Harry Adkins, police officer Bow-street public office (Holdens directory 1811 and in Old Bailey proceedings 1809 to 1819). So the first entry quite likely referred to him as well. A Harry Adkins was later keeper of Warwick gaol (1830s & 1840s)
1.3.1807 dine at King's w. Butlers, Mays, Supple, Italian Jew & mrs Hippisley; adv. Plunkets
All the guests listed by Godwin were Irish (apart from the Italian Jew). Supple was an Irish name and only appeared this once in Godwin's diary. There were some of this name living in London.
3.3.1807 at mrs Hippisley's, w. Wolsey / 24.2.1811 Wolsey calls / 25.2.1811 again / 18.3.1811 again
Despite the fame of Cardinal Wolsey this was a rare surname in Godwin's day. Wolseley was more common, and as the guests at mrs Hippisley's were of Irish connections, Sir William Wolseley (1779-1819) 3rd baronet of Carlow who died unmarried, is a possible, but I could find very little about him, and he seems less likely for the three calls in 1811.