The freedman Milichus betrays Piso's plot to kill the Emperor Nero and all of the conspirators are arrested.[1]
531
Battle of Callinicum: A Byzantine army under Belisarius is defeated by the Persians at Raqqa (northern Syria).[2]
1506
The Lisbon Massacre begins, in which accused Jews are slaughtered by Portuguese Catholics.[3]
1529
Beginning of the Protestant Reformation: After the Second Diet of Speyer bans Lutheranism, a group of rulers (German: Fürst) and independent cities protests the reinstatement of the Edict of Worms.
1539
The Treaty of Frankfurt between Protestants and the Holy Roman Emperor is signed.[4]
1608
In Ireland, O'Doherty's Rebellion is launched by the Burning of Derry.[5]