There are four road names which begin with the word ‘Lower’, two of which are actually called ‘Lower Road’. The five are:
- Lower Folly in Wilton
- Lower Road in Britford
- Lower Road between Bemerton and Quidhampton
- Lower Street in Harnham.html
Both Lower Folly and Lower Street have corresponding ‘Upper’ versions of their names. The ‘Folly’ probably refers to the building in the grounds of Wilton House, which is nearby.
Lower Road in Britford is probably named in distinction to the main Bournemouth Road, which in Britford is called the ‘High Road’
As far as I’m aware, though there is no ‘Upper’ or ‘High’ equivalent to Lower Road in Bemerton. I would say it’s the Lower Road in distinction to the main Wilton Road.