"Outside the village the parish contains scattered dwellings including Dean Hall, by the Newnham road, which for over two centuries belonged to the Pyrke family and was the principal residence in Littledean. In the 17th and 18th centuries several small settlements were formed by squatter development on waste ground just outside the Forest, notably at Callamore in the west but also on Dean hill in the southeast and at Waterend Lane (formerly Waterlane End) on the old Mitcheldean road in the north."

and

"At Waterend Lane five squatter cottages belonged to Littledean in 1679. Further north a homestead built by Richard Taylor (d. 1712) became known as the Greenway."

Greenway is clearly marked on old maps so that's a good reference.

Westbury on Severn,
Newnham
District 4A

All that part of the Township of East Dean which comprises

Popes Hill
Hangman's Hill
Chestnuts Lodge
Greenway
Shapride Hill
Watery Lane End

----

Then I googled: Hangman's Hill Drybrook

and from the website

British History on Line

Forest of Dean - Settlement

about 18 pages but

"East of the Mitcheldean-Littledean road there were 15 cottages on the lower slopes of Chestnut Hill in 1782 some were on the south-western side at Waterend Lane (fn.358) on the Littledean boundary where six cottages stood on Crown Land in 1834." etc

There is a baptism at Drybrook in 1839 (parents: William & Sarah BRISCOE) - residence: Watery Lane End - but they appear to have moved by 1841.

Watery Lane (without the End) is mentioned in other baptisms etc