House of Luxembourg
The Duchy of Luxemburg (; ; ; ) was a state of the Holy Roman Empire, the ancestral homeland of the noble House of Luxembourg. The House of Luxembourg, now Duke of Limburg, became one of the most important political forces in the 14th century, competing against the House of Habsburg for supremacy in Central Europe. They would be the heirs to the Přemyslid dynasty in the Kingdom of Bohemia, succeeding the Kingdom of Hungary and contributing four Holy Roman Emperors until their own line of male heirs came to an end and the House of Habsburg got the pieces that the two Houses had originally agreed upon in the Treaty of Brünn in 1364.