Hi Maddie,
Thanks for looking for me.
Yes, I too noticed the Mylor Bridge Royal Marine. I downloaded lots of RNLI Records from The National Archives Site, but none of them seemed to be for the right chap:-(
Likewise, I ordered more Birth Certs for William Wilson's born in Manchester; which again, didn't fit the info that I already had.
There is a missing gap for Merchant Navy Records for the period that William James Wilson might have served, - and so thats another dead end...
My plan for when I am next able to visit Kew is to try and sort out if there are any records relating to The Taylor and Sanderson Steam Shipping Company, who were based in Sunderland. My father's first job was with them, and it's just possible that William James Wilson had either worked for them previously, or had some sort of link to them.
I did try to follow Joseph Havelock Wilson's family back through the Censuses for Sunderland a while back now, but I couldn't find any link, - although difficult to know as I don't have any names...:-(
Thanks for the help,
Romilly.