I found the connecting document.
Eight months ago I discovered my great grandfather was Canadian. Born in 1887. Problem is the man changed this last name when he crossed the border. He went from Larrivee to Brown. And he used 3 different birth years. lol even his death certificate had the wrong birthdate.
Among all of the US documents I located about his life, ie petition for immigration, children’s birth certificates, death certificates, census, marriage licenses, draft cards, there was not one document which linked him specifically to his parents in Quebec, Canada. Or his name change.
After putting a request in to my 10th archive organization I located my great grandfathers original social security number application in 1945. On it he listed his mother Elisabeth Brand. (Maiden name).
It’s like I birthed a child. It took me 8-9 months