Why did Margaret of Tirol expel John Henry of Luxembourg in 1341?

In 1341, Margaret of Tirol expelled her husband, John Henry of Luxembourg, primarily because the Tirolese people were unhappy with the government of his brother, Charles (the future Holy Roman emperor Charles IV). Additionally, Margaret’s marriage to John Henry was both childless and unhappy, leading her to align with the local population against him.1

Following the expulsion, the emperor Louis IV declared the marriage void on the grounds that it had not been consummated and quickly married Margaret to his own son, Louis, margrave of Brandenburg, in 1342. This political maneuver aimed to secure influence over the strategically important region of Tirol, though it ultimately caused a significant rupture with the House of Luxembourg and further alienated the papacy.231