1) Out of Fore Street, in Cripplegate Ward Without (P.C. 1732).
Not named in the maps.
2) West out of Bishopsgate, near the northern boundary of Bishopsgate Ward Without (L.C.C. List, 1912).
First mention: 1670 (L. and P. Chas. II. 1669-70, p. 177).
Perhaps named after "Gonne Powder House" (q.v.).
Site now occupied by the Great Eastern and other railway lines.
A Dictionary of London. Henry A Harben. 1918.