Long-forms of Mamie?

Suggestions for any long-form possibilities for [name_f]Mamie[/name_f], other than [name_f]Mary[/name_f] and [name_f]Margaret[/name_f]? I love [name_f]Mamie[/name_f] as a nickname, but it isn’t something I would want to put on a birth certificate, since it sounds a little childish in the professional world. On the other hand, I’m not completely sold on [name_f]Mary[/name_f] and [name_f]Margaret[/name_f]. Can anyone think of another name, that has the same sophisticated, classic feel to it - but prettier?

Maybe [name_f]Miriam[/name_f]?

[name_f]Marie[/name_f]? [name_f]Maria[/name_f]? [name_f]Maeve[/name_f]?