1341

Date unknown

• The Breton War of Succession begins, over the control of the Duchy of Brittany.^{[citation needed]}
• Margarete Maultasch, Countess of Tyrol, expels her husband John Henry of Bohemia, to whom she had been married as a child. She subsequently marries Louis of Bavaria without having been divorced, which results in the excommunication of the couple.^{[citation needed]}
• Tbilisi becomes a capital of European Christian Cathedra, after the city of Smirna. George V (the Brilliant) returns Jerusalem and the Grave of Christ from the Muslims.^{[citation needed]}
• Saluzzo is sacked by Manfred V of Saluzzo.
• Casimir III of Poland builds a masonry castle in Lublin, and encircles the city with defensive walls.
• The sultan of Delhi Muhammad bin Tughluq chooses Ibn Battuta to lead a diplomatic mission to Yuan Dynasty China.
• A great flood in the river Periyar in modern-day southern India leads to the river changing its course, the closing of Muziris, the opening up of Cochin (Kochi) harbour, submersion of some islands, and birth of some new islands.
• Chinese poet Zhang Xian writes the Iron Cannon Affair, about the destructive use of gunpowder and the cannon.
• Approximate date – Magnus Erikssons landslag (the Country Law of Magnus IV of Sweden) is promulgated.
• The Danish king Valdemar IV Atterdag sells southern Halland for 8000 mark to king Magnus Eriksson of Sweden in order to finance the reunification of Denmark.
• Saint Bridget of Sweden and her husband Ulf Gudmarsson went on pilgrimage to Santiago de Compostela.