From discussion on the forum situation that parents registered a child with the name "Lucifer".

What is this? In Rome during the late empire (dominate) the name Lucifer was used as a male personal name (praenomen). There was, in particular, St. Lucifer, a church figure of the 4th century AD. Bishop of Kalyari (Sardinia), an opponent of the Arians. In addition, Lucifer is one of the ancient Roman names of the planet Venus, mentioned in the Eneida.

Well, following this logic, the name "Juda" is also quite normal...

You will be surprised...