- March 1: Louis the Pious was restored as Holy Roman Emperor in 834.
- March 2: Dirk VI becomes count of Holland in 1121.
- March 3: Dutch theologian Gijsbert Voet was born in 1589.
- March 4: Saint Adrian of Nicomedia was martyred in 306.
- March 5: David II of Scotland was born in 1324.
- March 6: Ferdinand Magellan arrives in Guam in 1521.
- March 7: Emperor Constantine declares Sunday a day of rest i n321.
- March 8: Urraca of León and Castile died in 1126.
- March 9: Saint Frances of Rome died in 1440.
- March 10: Agnes Blannbekin, Austrian mystic, died in 1315.
- March 11: Marie de France, Countess of Champagne, died in 1198.
- March 12: Cesare Borgia died in 1507.
- March 13: The bones of St Nicephorus were interred in Constantinople in 874.
- March 14: Catherine Cornaro, queen of Cyprus, sold Cyrpus to Venice in 1489.
- March 15: On this day in 44BC, Julius Caesar was assassinated on the Ides of March.
- March 16: On this day in 1485, Anne Neville, queen consort of England, died.
- March 17: The feast of Saint Patrick.
- March 18: Edward the Martyr, king of the English, died in 978.
- March 19: Alexander III of Scotland died in 1286.
- March 20: Cecily of York, daughter of Edward IV, was born in 1469.
- March 21: St. Angela Merici was born in 1474.
- March 22: Ferdinand II commissioned Amerigo Vespucci in 1508.
- March 23: Margaret d’Anjou was born in 1430.
- March 24: Harun al-Rashid died in 809.
- March 25: Blanche of Lancaster was born in 1345.
- March 26: Conrad II was crowned Holy Roman Emperor in 1027.
- March 27: Rachel Akerman, Austrian poet, was born in 1522.
- March 28: Saint Theresa of Ávila was born in 1515.
- March 29: Arthur I of Brittany was born in 1187.
- March 30: Saint Quirinus of Neuss died in 116.
- March 31: Francis I of France died in 1547.
An onomastic calendar: March
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