Albus Dumbledore — Alba Dumbledore

Minerva McGonagall — Montgomery "Monty" McGonagall

Severus Snape — Severina Snape*

Horace Slughorn — Hortense Slughorn

Argus Filch — Agnes Filch

Filius Flitwick — Felicia Flitwick

Sybill Trelawney — Samuel Trelawney

Pomona Sprout — Priam Sprout

Poppy Pomfrey — Pippin Pomfrey

Quirinus Quirrell — Quinna Quirrell

Gilderoy Lockhart — Glinda Lockhart

Remus Lupin — Remy Lupin

Alastor Moody — Alana Moody

Dolores Umbridge — Dorus Umbridge**

*Yes, Severina is actually a name- it's the feminine version of Severus, which is a Roman name meaning stern.

**Dorus is also a real name.