Between Well Street and Castle Street, Aldersgate Street (P.O. Directory). In Cripplegate and Aldersgate Wards Without.
First mention: "Nicols Square" (Horwood, 1799).
Former name: "Red Cross Square" (Rocque, 1746-Boyle, 1799).
Probably named after the owner or builder.
A Dictionary of London. Henry A Harben. 1918.