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Aleppo earthquake
One of the deadliest earthquakes in recorded history shook northern Syria. Aleppo's citadel cracked, the Crusader castle at Harim collapsed, and contemporary Muslim chroniclers set the death toll over two hundred thousand. Modern estimates are lower but still catastrophic. The quake struck at a moment when both Crusader and Muslim forces were jockeying for control of northern Syria, and its destruction temporarily neutralized the military infrastructure of both sides.
Earthquake devastates Gansu province
A catastrophic earthquake struck the border region between the Southern Song and the Western Xia empires in the loess highlands of present-day Gansu province. Massive landslides dammed rivers, buried entire villages under hundreds of feet of earth, and killed tens of thousands of people in one of the deadliest seismic events of the entire medieval era. Aftershocks continued to rumble for months across the shattered plateau.
Conrad III elected King of the Romans
The Hohenstaufen duke of Franconia, brother of the late emperor Henry V's rival, was elected German king on the death of Lothair III. His contested succession reopened the Welf-Hohenstaufen quarrel that would define German politics for more than a century. The division soon acquired Italian names: Guelph and Ghibelline, labels that would outlast the original families and structure Italian factional politics well into the Renaissance.
Battle of the Standard
On a moor above Northallerton, an English levy rallied around a ship's mast bearing consecrated banners and shattered a Scots army that had crossed the border in support of Empress Matilda. David I of Scotland survived but his territorial ambitions in Yorkshire were broken. The unusual standard, hung with the banners of St. Peter, St. John, and St. Wilfrid, gave the battle its name and its curious medieval pageantry.