My great-grandmother Frieden’s first name was Mary (I think). I remember her. She married a widower who had 4 sons; later, they had 4 daughters. My grandmother (my dad’s mom) was one of the daughters and her name was Marie.
Today while studying German on Duolingo, I came across zufrieden, which means satisfied, contented or content.
ancestry.com says it means this: Frieden Name Meaning – Jewish (Ashkenazic): variant of Fried or a short form of any of the various compound names beginning Frieden- of the same derivation.
It also means peace.
I doubt we are Jewish though, because I heard if you are Jewish you know you are.