Historical Events Henry IV Excommunication Threat Mar 1 Pope Gregory XIV threatens to excommunicate French King Henry IV King Henry IV of France Mar 13 Battle at Tondibi: Moroccan army under Judar [Jawdar] defeats Sultan Askia Ishaq II of Songhai Events in 1591 Famous Birthdays Mar 15 Alexandre de Rhodes, French Jesuit missionary (d. 1660) Born in 1591 Feb 1591 History by Year Apr 1591 Historical Figures Authors Civil Rights Activists Inventors Kings Revolutionaries Scientists