If you're creating a username or email using your first and middle name, there's zero chance it's available.
It's not a bad middle name, I mean the cute kitty from AristoCats is named Marie.
But I guess so is Raymond's mother.
Either way, you're stuck with it. (Unless you wanna change it, which you totally can, but to do so legally would be a pain and your mom also might get sad.)
So, to all you fellow Maries out there, I see you and I stand with you.