I'm going to keep plugging away with questions and if I repeat myself I am not meaning to. If I ask the same question in a different way try that on your father. He may recall something once it is said in a different way or on a day that just happens to spark off a memory. Never give up.
Talk to your eldest sibling. My sister came out with some info that I hadn't previously thought of talking to her about but of course she was around and I wasn't. Ask them where they were born and do they know how long your parents had been married then? If they have FULL birth certs ask then for a copy. It should give your father's details. Look at your own if you have one. Get your father's FULL cert.
Does your father remember when his father died, a date would be even better? Does he remember how old his fatherwas and where it happened? Does he know where his parents are buried? They may have a birth date or son/daughter of on their gravestone/s. All this info is vital to you getting back that extra step. Do your siblings know? This may narrow it down to getting a birth cert for your grandfather.
Death certs are very unreliable for info. If a person dies at a really old age, is the last of a line or the family can't supply the info, it will not be on the cert.
Is your father the oldest? Ask him who his brothers and sisters are? Who was the eldest? That will give you some idea as to when your grandparents got married. Where was your father born? Were all his siblings born in the same area? Speak to his youngest sibling?
Does your father remember where he got married and when? Was his father at the wedding? Ask him where he was working at the time he got married. Where he was working when his father died. He may have had to come home when it happened.
Was your grandfather born in American or Britain?
You need to voice these questions as your father won't just come up with this info, it is old news to him.
Were any of them in the 2nd World War or worked for essential services for the war? Were any of his family killed during the war?
This is the info I am working off as sent by you.
Ike ADAMS (Jason's grandfather) married Octavia GOODSPEED (Jason's grandmother) previously said Anderson born in 1914 in Texas died in 1997
Michael Lester ADAMS (Jason's father)
Let me know how you go, I am very interested. I'm starting to go on and on now so I will stop. Don't forget, ask and ask again.