Historical Events
- May 6 Johan Mauritius resigns as governor of Brazil
- May 23 Johan Mauritius van Nassau resigns as head of Civil rights activists
- May 27 Battle of Shanhai Pass: Li Zicheng's army defeated by combined Ming and Manchu force
- May 28 Bolton Massacre by Royalist troops under the command of the Earl of Derby (English Civil War)
Famous Birthdays
- May 23 Thomas Eisenhut, German composer, born in Aursburg, Germany (d. 1702)