Historical Events In August - 20
Thursday, 12 February 2026
0002 Venus-Jupiter in conjunction-Star of Bethlehem 

0535 Mochta of Louth, disciple of St. Patrick. 

0573 Gregory of Tours selected bishop of Tours 

0636 Battle at Yarmuk: Moslems beat Byzantines [or August 15]. 

0917 The Bulgarian czar Symeon overruns Thrace in violation of a 913 agreement with Constantinople The Byzantines launch a counterattack but are routed August 20 at Anchialus Symeon gains control of the Balkans 

0917 Battle at Anchialus: Bulgaria army counter attacks Byzantines 

0984 John XIV, [Petrus Canepanova], Italian Pope (983-84), dies 

1000 The foundation of the Hungarian state, Hungary is established as a Christian kingdom by Stephen I of Hungary 

1153 Bernard[us] van Clairvaux, French saint, dies 

1191 Crusader King Richard I results in the deaths of 3000 muslim prisoners in Akko 

1384 Geert Great, [Gerardus Magnus], theologist (Getijdenboek), dies. 

1391 Konrad von Wallenrode is recorded as becoming the 24th Hochmeister of the Teutonic Order 

1517 Antoine Perrenot de Granvelle, cardinal/viceroy of Naples (1571-75). 

1526 Peter Opmeer, church historian/humanist (Historia Martyrum) 

1534 Turkish admiral Chaireddin"Barbarossa" occupies Tunis 

1538 Aefgen Listinck, Dutch anabaptist, burned at stake 

1561 Jacopo Peri, composer. 

1566 Iconoclasm reaches Antwerp Belgium. 

1583 Humphrey Gilbert c1537-1583 sails to Cape Race Newfoundland to fish for cod and explore mainland; sends two ships back to England. 

1585 English queen Elizabeth I signs Treaty of Nonsuch: aid to Netherland. 

1597 1st Dutch East India Company ships returned from Far East. 

1604 Spanish garrison of Sluis surrenders to count Maurice. 

1619 1st Black slaves brought by Dutch to colony of Jamestown Virginia. 

1620 Hudson's Bay Company employee Henry Kelsey sees buffalo on the Prairies, southwest of The Pas; the inaugural white man to describe them. 

1625 Thomas Corneille, French playwright. 

1632 Valentin de Boulogne, French painter, buried at 38 

1637 Cornelis Van Aerssen, Dutch governor/co-owner of Surinam. 

1639 Martin Opitz, German poet/historian (Troerinnen), dies at 41. 

1641 Britain and Scotland sign Treaty of Pacification 

1648 Battle of Lens: French duke d'Enghien defeats Spaniards 

1648 Edward Herbert of Cherbury, English military/philosopher, dies at 65 

1665 Bernardus Smijtegelt, vicar (Gekrookte Reed). 

1666 Alphonse d' Eve, composer. 

1672 Former Grand Pensionary Johan de Witt and his brother Cornelis are brutally murdered by an angry mob in The Hague 

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