The north side of Castle Street East between Newman Street and Wells Street. The street was also known as Little Castle Street. (Great Castle Street aka Castle Street West was its continuation on the western side of Oxford Market, and had a separate set of numbers which can cause some confusion). "Castle Street, Oxford Street" or "Castle Street, Oxford Market" could mean either section. "Castle Street, Newman Street" was clearly Castle Street East. All in St Marylebone parish
Numbers 4, 8, 10,12 and 14 (and 11 Berners Street next door to number 10) all featured in Harris's Lists of…