📅 Today in HistoryAugust 17
Byzantine-Bulgarian wars: Battle of the Gates of Trajan: The Bulgarians under the Comitopuli Samuel and Aron defeat the Byzantine forces at the Gate of Trajan, with Byzantine Emperor Basil II barely escaping.
Georgenberg Pact: Ottokar IV, Duke of Styria and Leopold V, Duke of Austria sign a heritage agreement in which Ottokar gives his duchy to Leopold and to his son Frederick under the stipulation that Austria and Styria would henceforth remain undivided.
Karl Topia, the ruler of Princedom of Albania, forges an alliance with the Republic of Venice, committing to participate in all wars of the Republic and receiving coastal protection against the Ottomans in return.
Hundred Years' War: Battle of Verneuil: An English force under John, Duke of Bedford defeats a larger French army under Jean II, Duke of Alençon, John Stewart, and Earl Archibald of Douglas.
Konrad Bitz, the Bishop of Turku, marks the date of his preface to Missale Aboense, the oldest known book of Finland.
Cesare Borgia, son of Pope Alexander VI, becomes the first person in history to resign the cardinalate; later that same day, King Louis XII of France names him Duke of Valentinois.
The Catholic Church is overthrown and Protestantism is established as the national religion in Scotland.
Eighty Years' War: Siege of Antwerp: Antwerp is captured by Spanish forces under Alexander Farnese, Duke of Parma, who orders Protestants to leave the city and as a result over half of the 100,000 inhabitants flee to the northern provinces.
A first group of colonists sent by Sir Walter Raleigh under the charge of Ralph Lane lands in the New World to create Roanoke Colony on Roanoke Island, off the coast of present-day North Carolina.
