Green’s Dictionary of Slang

overseer of the (new) pavement n.

also overseer

a man standing in a pillory.

[UK]G. Parker View of Society II 75: Stoop-Nappers are those who having been set at the pillory, they are likeswise called Overseers of the New Pavement.
[UK]Grose Classical Dict. of the Vulgar Tongue n.p.: Overseer, a man standing in the pillory, is from his elevated situation, said to be made an overseer.
[UK]Grose Classical Dict. of the Vulgar Tongue (2 edn) n.p.: [as 1785] [Ibid.] n.p.: stoop-napper, or overseer of the new pavements Persons set in the pillory. Cant .
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue (3 edn) [as cit. 1785, 1788].
[UK]G. Andrewes Dict. Sl. and Cant.
[UK]Lex. Balatronicum [as cit. 1788].
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue [as cit. 1785, 1788].
[UK]G. Kent Modern Flash Dict.
[UK]Flash Dict. in Sinks of London Laid Open.