Of course HOLY ROMAN EMPIRE! Think of Karl IV. 1346-1378. I thought you're Luxemburgian, so you should know better!
Well done Hadrian ! No, I am not from Luxemburg.
You are right about Charles IV of Luxemburg. He was indeed elected king of the Romans, but I knew him better as king of Bohemia. Anyway, King of the Romans was more an honorifc title than anything else. He was also the father of John the blind that Knight-dragon cited. I apologize for having rejected the Holy Roman Empire earlier.
Q9 is correct as well.
I think this thread will die quietly now. Does anyone have more questions about Luxemburg ?