Massacre of Kings

What ostensibly started as a wedding between the son of the duke of the Duchy of Rafa and his fiancée grew quickly to attract much more attention. The groom was a distant relative to the King of the Kingdom of Ashar and the bride was a distant relative to the King of the Kingdom of Morath. As such both great kings, their families and their retinue were in attendance. This attracted a lot of the petty rulers to also secure for themselves an invitation, in the hopes of catching the ear of one of the kings.
Due to the large attendance, the duke of Rafa asked the attendees to only bring a light retinue to the event itself. The event would be guarded by his soldiers while the retinue of the other rulers camped just outside the duke's palace.
The guard of Rafa, for long underfunded, caught wind of this plan and once the wedding started, they drew their swords and massacred everyone present, including the duke and the Kings of Ashar and Morath. They then began looting the bodies of anything valuable while feeding contradictory information to the retinues waiting outside.
To the followers of the King of Ashar they said that the soldiers of Morath attacked and slaughtered the guests and to the followers of the King of Morath they said that the soldiers of Ashar committed the murders. The retinues of the murdered kings and rulers then befell each other, utterly devastating the city of Rafton, while the true murderers, laden with the loot escaped the city in the chaos.
The instant devastation of almost the entire Eccasiorian leadership caused utter chaos. Many kingdoms immediately fell into civil war, while others would begin to erratically attack all their neighbours, leading to what is now known as the Eccasiorian Wars.