I'd probably go with ¡ust
Mary. If I had to have a nickname, of those I'd pick
Molly. If I were going to use a double name it would be Mary-Lou. But almost all of the Marys I know are Mary+Mn and most of the ones that aren't go by their middle name, and I find it cowardly. And often really awful.
Mary Ashton,
Mary Bradley, etc, or else super boring things like
Mary Beth. It's a southern thing I guess. Dad told me that he was telling someone that my mom's name was
Mary and they said "
Mary what?" and he was like ummmm well her middle name is
Frances and they said "Oh okay
Mary Frances." Eye-roll. Of course people do call her
Mary Frances sometimes
Anyway I love the name, I don't love it as much as I want. I'd use it Fn or mn but would rather fn.
Combos are fun with it, aren't they? My favorite of yours are
Eleanor,
Alexandra,
Isidora,
Clementine. I dunno what combo I'd use. I like
Mary Minerva pretty well.