I used to live five minutes walk from Ashton Gate (in Southville) and even I knew I was in the HISTORICAL COUNTY of Somerset. As the map clearly demonstrates. Zoom in. The county border was the Avon. Everything south of it (plus Spike Island) was Somerset.
Agreed. Having spent a huge amount of time on my Uncles farm at Brockley just down the road I can confirm that Ashton Gate was definitely in the historical county of Somerset.