At the north end of Bridgewater Street, Barbican, at No. 1, in Cripplegate Ward Without (P.O. Directory).
First mention: Hatton, 1708. Then newly erected.
In O. and M. 1677, the site is occupied by the Earl of Bridgewater's House, from whence the name of the square is derived.
A Dictionary of London. Henry A Harben. 1918.