Historical Events
- May 10 Church reformer John Pistorius caught in the Hague
- May 12 Battle at Biblingen: Zwabische Union beats rebel Wurttemberg farmers
- May 15 The battle of Frankenhausen: German peasant army surrounded, 5,000 slaughtered ; ends the peasants' uprising
- May 17 Battle at Zabern: duke of Lutherans beats rebels