An onomastic calendar: August

• August 1: Justinian I became sole ruler of the Byzantine Empire in 527.
• August 2: Pope Severinus died in 640.
• August 3: Saint’s day of Olaf II of Norway.
• August 4: Berengar II of Italy died in 699.
• August 5: Alexander I Jagiellon was born in 1461.
• August 6: Saint Dominic, founder of the Dominican Order, died in 1221.
• August 7: Otto I of Germany was crowned in 936.
• August 8: Conrad Lycosthenes, humanist and ecyclopedist, was born in 1518.
• August 9: Arnold Fitz Thedmar, London chronicler, was born in 1201.
• August 10: Eleanor, the maid of Brittany, died in 1241.
• August 11: Mary of York was born in 1467.
• August 12: Christian III of Denmark was born in 1503.
• August 13: Alfonso XI of Castille was born in 1311.
• August 14: Duncan I of Scotland was murdered in 1040.
• August 15: Carolingian military leader Roland died in 778.
• August 16: Philippa of Clarence, Countess of Ulster, was born in 1355.
• August 17: Cesare Borgia became the first person to resign a cardinalcy in 1498.
• August 18: Saint Clare of Montefalco died in 1308.
• August 19: Catherine of Bohemia was born in 1342.
• August 20: Stephen I of Hungary was canonized in 1083.
• August 21: Philip II of France was born in 1165.
• August 22: Saint Columba sees the Loch Ness monster in 565.
• August 23: William Wallace was executed for treason in 1305.
• August 24: Italian painter Lavinia Fontana was born in 1552.
• August 25: Anna of Saxony married William of Orange in 1561.
• August 26: Thomas Bradwardine, logician, mathematician, and archbishop died in 1349.
• August 27: Arthur II, Duke of Brittany, died in 1321.
• August 28: Saint Augustine of Hippo died in 430.
• August 29: Hungarian poet Janus Pannonius was born in 1434.
• August 30: Amalasuntha became queen regent of the Ostrogoths in 524.

An onomastic calendar: February

• February 1: Edward III was crowned king of England in 1327.
• February 2: Bona Sforza, queen consort of Poland, was born in 1494.
• February 3: Douce of Provence married Ramon Berenguer in 1112.
• February 4: Hrabanus Maurus died in 856.
• February 5: Aegidius Tschudi, Swiss writer and historian, was born in 1505.
• February 6: Dunnchad mac Domnaill, king of Mide, died in 797.
• February 7: Pandulf IV of Benevento died in 1074.
• February 8: Mary Queen of Scots was executed for treason in 1587.
• February 9: Agnes Sorel, mistress of Charles VII, died in 1450.
• February 10: Robert the Bruce murdered John Comyn in 1306.
• February 11: Elizabeth of York, queen consort of England, was born in 1466.
• February 12: Charles the Fat was crowned Holy Roman Emperor in 881.
• February 13: Catherine Howard was executed for treason in 1542.
• February 14: The feast day of Saint Valentine.
• February 15: Pope Pascal II established the Knights Hospitallers in 1113.
• February 16: German philosopher Philipp Melancthon was born in 1497.
• February 17: Charles III, Duke of Bourbon, was born in 1490.
• February 18: Mary I of England was born in 1516.
• February 19: Nicolaus Copernicus was born in 1473.
• February 20: Edward VI was crowned king of England.
• February 21: James I of Scotland was assassinated in 1437.
• February 22: Robert II of Scotland became king in 1371.
• February 23: Justinian I orders the building of the Hagia Sophia.
• February 24: Pope Gregory XIII introduced the Gregorian calendar in 1582.
• February 25: Theodoric the Great negotiated for peace with Odoacer in 493.
• February 26: Wenceslaus IV of Bohemia was born in 1361.
• February 27: Henry IV was crowned king of France in 1594.
• February 28: Pope Saint Hilarius died in 468.
• February 29: Oswald, Archbishop of York, died in 992.