Me again
I have looked on the Canadian 
Soldiers of the 1st World War  site
Granddad 's details I already have
The other two chaps in the photo I am pretty sure I have found   

but  a George PLEVERY is not on there..
So I think maybe it was written as it sounded? 
Tried loads of variations  Palfrey  Pulver and similar no luck
Any suggestions?  Thank you.