What happened March 1811 AD

Muhammad Ali invited the Mamluk leaders to a celebration at the Cairo Citadel in honor of his son, Tusun Pasha, who was to lead a military expedition into Arabia. The event was held on 1 March 1811. When the Mamluks had gathered at the Citadel and were surrounded and killed by Muhammad Ali's troops.

On 20 March 1811, Marie Louise gave birth to a baby boy, whom Napoleon made heir apparent and bestowed the title of King of Rome. His son never actually ruled the empire, but given his brief titular rule and cousin Louis-Napoléon's subsequent naming himself Napoléon III, historians often refer to him as Napoleon II.