Historical Events In August - 20
Sunday, 17 August 2025
0002 On August - 20 venus-Jupiter in conjunction-Star of Bethlehem
0535 On August - 20 mochta of Louth, disciple of St. Patrick
0573 On this day in history gregory of Tours selected bishop of Tours
0636 Battle at Yarmuk: Moslems beat Byzantines [or August 15] on this day in history.
0917 On August - 20 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 On August - 20 battle at Anchialus: Bulgaria army counter attacks Byzantines
0984 John XIV, [Petrus Canepanova], Italian Pope (983-84), dies on August - 20.
1000 On August - 20 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 on August - 20.
1191 Crusader King Richard I kills 3,000 muslim prisoners in Akko on August - 20.
1384 On this day in history geert Great, [Gerardus Magnus], theologist (Getijdenboek), dies
1391 On August - 20 konrad von Wallenrode becomes the 24th Hochmeister of the Teutonic Order.
1517 Antoine Perrenot de Granvelle, cardinal/viceroy of Naples (1571-75) on August - 20.
1526 On August - 20 peter Opmeer, church historian/humanist (Historia Martyrum)
1534 Turkish admiral Chaireddin"Barbarossa" occupies Tunis on this day in history.
1538 On this day in history aefgen Listinck, Dutch anabaptist, burned at stake
1561 Jacopo Peri, composer on August - 20.
1566 On this day in history 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 on August - 20.
1585 On this day in history english queen Elizabeth I signs Treaty of Nonsuch: aid to Netherland
1597 On August - 20 1st Dutch East India Company ships returned from Far East
1604 On this day in history spanish garrison of Sluis surrenders to count Maurice
1619 On August - 20 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 first white man to describe them on August - 20.
1625 On this day in history thomas Corneille, French playwright
1632 On August - 20 valentin de Boulogne, French painter, buried at 38
1637 On August - 20 cornelis Van Aerssen, Dutch governor/co-owner of Surinam
1639 On this day in history martin Opitz, German poet/historian (Troerinnen), dies at 41
1641 On August - 20 britain & Scotland sign Treaty of Pacification
1648 On August - 20 battle of Lens: French duke d'Enghien defeats Spaniards
1648 On August - 20 edward Herbert of Cherbury, English military/philosopher, dies at 65
1665 On August - 20 bernardus Smijtegelt, vicar (Gekrookte Reed)
1666 On this day in history alphonse d' Eve, composer
1672 On August - 20 former Grand Pensionary Johan de Witt and his brother Cornelis are brutally murdered by an angry mob in The Hague.