Something similar (a civil war, political struggle settled in part by arms)
happened in the British Isles in the fifteenth century. Should the descendants of Richard Plantagenet now demand that their house have the crown returned to it?
We had the Civil War in the seventeeth century also to thrash out the issue you list (talk about thread drift!). Seeing as you brought it up, my ancestors actually lost their lands in the Wars of the Roses, having backed the wrong horse so to speak, so I'm all for claiming the crown back if that's what you're suggesting.
I'll bow to your superior knowledge on China, as it's not really an argument I'm that inclined to have. My point was really in response to racedo trying to tie Taiwan into Crimea, where there is no similarity whatsoever, and certainly no hypocrisy with regard to the West's position on China/Taiwan and that of Russia/Ukraine/Crimea.