I made a clan on smp entitled NoxDaemon which is latin for night demon. I only recently created this, so I have not had the chance to start making a headquarters or anything, but people are more than welcome to join or make alliances with me.
Quick note, more language based - nox isn't an adjective in Latin, and you do not capitalise anything that isn't a proper noun. If you wanted 'night of the demon', nox daemonis would be correct.