I've been using Carpathia on and off for the past couple of decades (sad, I know). I started using it around the same time the Left Behind book series came out. The person representing the Anti-Christ was named Nicolai Carpathia. Everyone I know assumes that's where I got the name, however, my choice of this name had NOTHING to do with this book series. I actually chose it after watching Titanic, way back when (and again, sad, I know). The name of the ship that rescued the survivors of the Titanic... HMS Carpathia.
The vh is a little too esoteric to go into and the 99 was a number chosen at random.