No not related but your Raymond Johnson is has vague as John Smith and you give no clues to his life at all.
I like to dig trying to help but after a few tries, your feedback is not helpful, rather vague; for a while i thought maybe he was not family, i know now he is.
what is the purpose of your search. If you really have no clue about his life, you have to verify the info that was given to you, death cert. army details, etc. Normally in the states the death certificate gives the father's name.
Obtuaries are usually available for a price. I only work with free sites. I spent a lot of time finding those info be pure pleasure of the chase in genealogy.
Can you tell us at least if any of of the previous replies are of some values.