Kathy, I don't have any information about the Vaggs you are enquiring about but I may be able to give you a new avenue to explore.
In 1982 my father-in-law went to a Vagg reunion in Australia. It had been organised by Mervyn Vagg who also wrote a book for the occasion. "The Vagg Odyssey. A thousand years of the Vaggs." The address in that book is Box 60, Blackburn, 3130 Australia.
It is interesting that the names of the men you are looking for are common names amongst the Vaggs written about in this book. Those names are also used now. My father-in-law is Gordon James and my husband Michael John.
I hope this helps you with your search. If I find any further information I will send it to you. Regards Irene.