Sorry for the delay in getting back to you. I've been down in Shropshire for a Guest family funeral.
Yes, it is Gertrude in the photograph, with her husband William Guest sitting next to her.
I've attached William's obituary which may be of interest to you. I haven't found Gertrude's as yet.
I popped to St. Peter's churchyard in Priorslee to see if I could find a grave for William and Gertrude but I didn't see anything. I did, however, get a photograph of a Callear memorial stone and I'll post it on here when I download it from my camera.
I haven't had chance to look at your FB group yet, but I certainly shall.
Kind regards
Chris