Can anyone I.D. these people, please? =)

[etiolation]

A distant relative of mine recently found this image behind another painting in a frame. =) We've all been wondering who they might be.

The image originally belonged to Gertie Jones née Williams. I've been told that the lady who is sitting might be her cousin, Sylvia, but other than that we don't recognise anyone. =)



This painting was also inside the same frame, we think this might be Gertie's mother, Blodwen, or maybe an aunt of her's.



Thanks in advance for any help! <3