names & addresses on flyleaf of Godwin's diary vol xv: Hossick, Vanderlyn painter, Jas. Achard 16 Bloomsbury-sq / 24.4.1809 Hossick calls
For the other names on the flyleaf see Graves, William; Davis/Davies after 1805; and Randolph, David Meade. I can find nothing to suggest who Hossick was except presumably a friend of Burr's. John Vanderlyn 1775-1852 wikipedia was a friend of Burr's and was in Paris in 1809. James Achard was listed in directories at 8 Gt Ormond-st in 1802 and 1805, and in Land Tax lists 1806 to 1809 at Bloomsbury-sq, in a fairly substantial house rental £100. But I found nothing further about him