July 10

138 – Emperor Hadrian of Rome dies of heart failure at his residence on the bay of Naples, Baiae; he is buried at Rome in the Tomb of Hadrian beside his late wife, Vibia Sabina. 645 – Isshi Incident: Prince Naka-no-Ōe and Fujiwara no Kamatari assassinate Soga no Iruka during a coup d'état at the imperial palace. 988 – The Norse King Glúniairn recognises Máel Sechnaill mac Domnaill, High King of Ireland, and agrees to pay taxes and accept Brehon Law; the event is considered to be the founding of the city of Dublin. 1086 – King Canute IV of Denmark is killed by rebellious peasants. 1212 – The most severe of several early fires of London burns most of the city to the ground. 1460 – Richard Neville, 16th Earl of Warwick, defeats the king's Lancastrian forces and takes King Henry VI prisoner in the Battle of Northampton. 1499 – The Portuguese explorer Nicolau Coelho returns to Lisbon after discovering the sea route to India as a companion of Vasco da Gama. 1512 – The Spanish conquest of Iberian Navarre commences with the capture of Goizueta. 1519 – Zhu Chenhao declares the Ming dynasty's Zhengde Emperor a usurper, beginning the Prince of Ning rebellion, and leads his army north in an attempt to capture Nanjing. 1553 – Lady Jane Grey takes the throne of England. 1584 – William I of Orange is assassinated in his home in Delft, Holland, by Balthasar Gérard. 1645 – English Civil War: The Battle of Langport takes place. 1778 – American Revolution: Louis XVI of France declares war on the Kingdom of Great Britain. 1789 – Alexander Mackenzie reaches the Mackenzie River delta. 1806 – The Vellore Mutiny is the first instance of a mutiny by Indian sepoys against the British East India Company. 1832 – U.S. President Andrew Jackson vetoes a bill that would re-charter the Second Bank of the United States. 1850 – U.S. President Millard Fillmore is sworn in, a day after becoming president upon Zachary Taylor's death. 1877 – The then-villa of Mayagüez, Puerto Rico, formally receives its city charter from the Royal Crown of Spain.