📅 Today in HistoryJune 30

Pope Marcellinus begins his papacy.

The Byzantine army of emperor Constantine V defeats the Bulgarian forces in the Battle of Anchialus.

Zhu Yunwen ascended the throne to the Ming dynasty to become the Jianwen Emperor.

Battle of Arbedo between the duke of Milan and the Swiss cantons.

Spanish forces defeat a combined French and Navarrese army at the Battle of Noáin during the Spanish conquest of Iberian Navarre.

King Henry II of France is mortally wounded in a jousting match against Gabriel, comte de Montgomery.

The Spanish-held Castillo San Felipe del Morro in San Juan, Puerto Rico having been besieged for fifteen days, surrenders to an English force under Sir George Clifford, Earl of Cumberland.

The University of Tartu is founded.

Royalists loyal to King Charles I led by the Earl of Newcastle defeat Parliamentarian troops commanded by Lord Fairfax in the battle of Adwalton Moor, allowing them to capture Bradford and Leeds.

The Deluge: Khmelnytsky Uprising: The Battle of Berestechko ends with a Polish victory.