Cheryl, I tried directly contacting you a couple of times but have no record of a reply. I've also noticed you've put up some more details on your website:
If your g-grandfather is Arthur Alexander Fenn b. Ipswich 1878 then I have some more information and its possible we are distantly related. However, you should check out the death registers first as there was a death noted in the index that could put the cat amongst the pigeons: Death Dec 1879: Fenn, Arthur Alexander, age 0, at Ipswich RD I haven't seen the certificate so it might not be him, however I have only ever seen one birth registered with that name in England.
However if he was a Suffolk boy I might have more information on likely candidates.