On This Day: May 18

Constantine the Great announced free distributions of food to the citizens in Constantinople.

Louis II of Italy is crowned for the second time as Roman Emperor at Rome, at the age of 47. His first coronation was 28 years earlier, in 844, during the reign of his father Lothair I.

First Crusade: Around 800 Jews are massacred in Worms, Germany.

The future Henry II of England marries Eleanor of Aquitaine. He would become king 2 years later, after the death of his cousin once removed King Stephen of England.

The Principality of Antioch, a crusader state, falls to the Mamluk Sultan Baibars in the Siege of Antioch.

Fall of Acre, the end of Crusader presence in the Holy Land.

Bruges Matins, the nocturnal massacre of the French garrison in Bruges by members of the local Flemish militia.

During the Battle of Buyur Lake, General Lan Yu leads a Chinese army forward to crush the Mongol hordes of Tögüs Temür, the Khan of Northern Yuan.

Alonso de Ojeda sets sail from Cádiz on his voyage to what is now Venezuela.

The Great Siege of Malta begins, in which Ottoman forces attempt and fail to conquer Malta.