[name]Do[/name] you like it?: I agree with PP, its a little dated, but that I suppose can make it handy since there’ll only be one [name]Gloria[/name] looking up when you call her name out
Does [name]Gloria[/name] Churchyard sound ok?: It sounds really…churchy to me. I guess I’m thinking of all the hymns with ‘gloria’ in them.
Does it fit with sister [name]Florence[/name] ([name]Flossie[/name]/[name]Floss[/name])?: If you call her [name]Flossie[/name], then yes, but with [name]Flora[/name] or [name]Florence[/name] they have similar sounds I would avoid, as noted by pp
What middles would you pair with it?: [name]Gloria[/name] Churchyard is a lot of syllables, so something a little shorter in the middle might be nice though nothing is jumping to mind
What nickname (if any) would you use?: [name]Ria[/name] probably, Glo sounds funny to me.