Avon (county)
Avon was a county that existed from 1 April 1974 until 31 March 1996. It was in South West England. It was not popular, and was broken up between parts of Somerset, Bristol and Gloucestershire.
Avon (county) Media
Map of the former Avon area, now sometimes called Greater Bristol
The West of England Combined Authority (1–3), alongside North Somerset (4), covers the same area as the defunct county of Avon
https://upload.wikimedia.org/wikipedia/commons/1/17/Greater_bristol_with_everything.png