The Poll at the election of a Knight of the Shire 1776 (General)
If you search in Google Books - you will find
The Poll at the election of a Knight for the Shire for the County of Gloucester which took place 17 May 1776.
This covers our FOD area - and lists many individuals - the criteria appears to be that you owned house/land
There is an index of names at the end of this article.