SOCIETY FOR CONSTITUTIONAL INFORMATION: Marshall Esq of Hackney proposed member 24.11.1786 by Thomas Ridgway 2nded John Baynes
There was a John Marshall in Hackney Land Tax records 1783-1785 and a William Marshall at a different Hackney address 1786-1788. Sorry to say Ive made no further identification, Marshall being a common name.
GODWIN DIARY: Godwin or his stepson Charles Clairmont called on Tate 6 times between 5.4.1810 and 10.9.1811, then Tate called on Godwin on 5.10.1811 and 4.1.1812. Early in 1819 there were two further calls each way. Not identified on GD website, nor have I researched it further, but he was possibly the SCI member below
SOCIETY FOR CONSTITUTIONAL INFORMATION: William Tate of Battersea proposed member 27.4.1792 by Michael Pearson 2nded John Horne Tooke