Green’s Dictionary of Slang

Ellenborough’s lodge n.

[Lord Ellenborough (1750–1818) Lord Chief Justice 1802–17]

the King’s Bench prison.

[UK]Chester Courant 29 July 1/1: Ellenborough Lodge, vulgarly denominated the King’s Bench prison.
[UK]Lex. Balatronicum n.p.: Ellenborough Lodge. The King’s Bench Prison.