Hi there, thanks for you message. I'm sorry if I'm a little late in replying but at this precise moment in time I'm in Middlesbrough visiting my folks for a couple of weeks.
The reason why I thought that maybe John was called James was because of his middle name initial being J, However I have found out that his family used to call him Jack !!! Whether this is of any help I don't know, but I would definately say that we are related!!!
I've told my Dad about you and he is really thrilled. (John Alder is my Dads Great Grandfather).
Seeing as I'm in Middlesbrough at the moment and you're only in Hartlepool, maybe we could meet up? (As luck has it, I've got all of my Family Tree stuff with me)
This is my mobile number if you want to give me ring and we could arrange a time etc. 07944586077.