The name Dacian is a boy's name of Latin, Romanian origin. Dacian and discussed in our forums with posts like "Picky Parents BNG".
From the experts:
Dacia was an ancient region comprised of what is modern Romania and Moldova and smaller parts of other Eastern European countries. Its inhabitants were called the Dacians, and the Dacian Kingdom flourished around the time of Christ until it was toppled by the Romans. Daciana is the female version sometimes used in Romania.