Demitri Lucilius

One of the greatest inquisitive minds of Gallenia, if not the world.
Demitrius Lucilius is a Gallenian who was born in Gallenia. He’s a witch with a crystal cat familiar and his patron is the DM. He doesn’t like the volcanic fumes since they make him cough and so lives near the sea in a country similar to France, where people call him Demitri.
Could have coined the term Terravita due to his vast knowledge and because it’s in Latin.
Could have formed the Wayward Path and/or created their Great Library.
Has a doorway in his home similar to Howl's Magical Doorway.
Familiar is a psicrystal?