Elmo's Clan

this is a family picture of Elmo and Dudley Ashcroft, their daugther florcence with her husband Peter Grable, and other family members.
Would love to be able to identify the rest of them.
(The only ones we can say for certain is that Elmo & Dudley are the eldest couple, in front of the picture)
People in photo include: Avis Elmo Duncan, Dudley AShcroft, Florence Ashcroft, and Peter Grabel