7.8.1807 lock at S(kinner) S(treet); adv. T(homas) T(urner) & Barret, constable, 3 Hodgkinses
I haven't found any mention of a constable called Barrett or Barret around this time
4.8.1807 dine at Johnson's w. Keene / 26.8.1808 again / 19.10.1810 again / 8.10.1812 call on Keene, Dublin (not seen) / 13.10.1812 Keene of Dublin calls
Starting with the last two entries above, this may have referred to Martin Keene 1781-1846 bookseller of 6, College Green, Dublin, or to his father Arthur Keene of Charlemont-st, Dublin will PCC 4.10.1822. As a publisher Martin Keene seems to have been anti-Catholic, and he was King's printer in partnershop with the Grirsons (Dict Irish Biog). Possibly he was also the earlier Keene at Johnson's, if he visited London most years.
10.8.1807 call w. (Marshall) on Troby
A rare name. Post Office directory 1801 Thomas Troby gold & silver plater Ship-ct Old Bailey. John Troby silversmith Old Bailey will PCC 4.9.1804 mentioned his wife Mary (1753-1838) and son William Bamforth Troby. John Troby son of John Troby musician of Soho was made free of Farriers Company 1796. Children of John & Mary Troby bapt St Martin Ludgate Harriet 1789, William Bamforth 1791, Hannah 1793. Children of John & Mary Troby bapt Sheffield Margaret 1774 Elizabeth 1776 Mary 1780 Thomas 1782 could have been the same family
4.8.1807 dine at Johnson's, w. partner to Constable
Archibald Constable (DNB 1774-1827) in 1803 took on a partner Alexander Hunter son of the owner of the large estate of Blackness in Forfarshire. From 1809 Constable's London 'branch' was Constable, Hunter, Park and Hunter. Within a year Park died. All this from DNB. ?Thomas Park of Hampstead will PCC 2.3.1811
See Jackson's Oxford Journal 17.10.1807 just arrived in Oxford, the great Siboya serpent, brought home in the Sir William Bensley East Indiaman. 12 feet long, muticoloured, harmless. I could find no reference to where it was shown in London. See Caroline Grigson's Menagerie (2016) page 93