Lets assume that the Civil War ends in a Confederate Victory, and West Virginia stays in the Union.
For starters, would it call itself West Virginia? Prior to 1863, it was just the Unionist Virginia government based out of Wheeling. If the South went it's seperate way, would the Union just call it Virginia? Or something else entirely?
Second, say in a second war, the USA manages a crushing victory and reabsorbs the CSA. Would they reunite Virginia and West Virginia as a whole state, sort of an East/West Germany on the state level?