Love this name, for a few reasons.
One, "northern Virginia" is considered a 'world unto itself' in the state of VA. This is a very standard, commonly used geo phrase that has cultural resonance above and beyond it's directional descriptor.
Two, the phrase people use is "Northern Virginia". Not "North Virginia". You have the correct phrase.
If this name were dropping, I would chase the hell out of it. There is a degree of value here.