Spot on Dolly.
Richardson Terrace ( at one time numbers 1-13) was in Cowpen Village.
On 1901 census (page ref 4813-181-35, 36, 182-37) it gets enumerated close to Tweedy Street, and back Tweedy Street.
Modern day Cowpen Road which runs up from Blyth through North Farm, Cowpen Newtown, Cowpen Village, Kitty Brewster, was once made up of several differently named chunks. Not sure about this but I think the bit of Cowpen Road , at Cowpen Village, that slopes down to the little shop, and is opposite the chip shop (if still there ) might have been called Richardson Terrace.
Michael