On This Day: July 11th

Samuel de Champlain returns to Quebec.

While exploring the North Atlantic Ocean in an attempt to find the Northwest Passage, Martin Frobisher sights Greenland, mistaking it for the hypothesized (but non-existent) island of "Frisland".

Giuliano della Rovere is appointed bishop of Coutances.

Ottoman Interregnum: Süleyman Çelebi defeats his brother Musa Çelebi outside the Ottoman capital, Edirne.

Ming admiral Zheng He sets sail to explore the world for the first time.

Charles IV, Count of Luxembourg and King of Bohemia, is elected King of the Romans.

Battle of the Golden Spurs (Guldensporenslag in Dutch): A coalition around the Flemish cities defeats the king of France's royal army.

Baldwin IV, 13, becomes King of Jerusalem, with Raymond III, Count of Tripoli as regent and William of Tyre as chancellor.

Signing of the Treaty of Saint-Clair-sur-Epte between Charles the Simple and Rollo of Normandy.

Byzantine emperor Michael I, under threat by conspiracies, abdicates in favor of his general Leo the Armenian, and becomes a monk (under the name Athanasius).