It's difficult as there are a few Franks born Glostershire in the late 1870s, as you know. However my limited (free) access suggests there is an Ancestry Family tree already online for "your" Frank ie born 1878, courtesy of a "Ben Griffiths".
Whether this is a tree you've seen or even own sadly I cannot say.

If no-one else is able to help out meanwhile I'll be subscribing very soon so I'll look it up in a week or three.

Good luck meanwhile, Jeff