In the summer of 1184 Henry VI — King of the Romans, son of Emperor Frederick Barbarossa, later emperor himself — travelled to Erfurt in Thuringia to arbitrate a bitter feud between Landgrave Louis III of Thuringia and Archbishop Conrad of Mainz. Such a royal court day drew the regional aristocracy in force: counts, ministerial knights, and senior clergy crowded into town for the proceedings.

The assembly gathered in an upper-storey hall of the provost’s building attached to St Peter’s monastery on the Petersberg. Medieval sanitation put the building’s cesspit in the cellar, directly beneath the wooden floors — decades of accumulated waste in a stone-lined vault.

The collapse

As the crowd packed the hall, the timber floor failed. It gave way, and the floor below it failed too, cascading dozens of men through two storeys and into the latrine pit at the bottom. Around 60 died — the chronicle figures vary, some claiming as many as 100 — the majority not killed by the fall but drowned or suffocated in the cesspit.

The dead included named magnates: Count Gozmar of Ziegenhain, Count Friedrich of Abenberg, Burgrave Friedrich of Kirchberg, Beringer of Meldingen, and other lords whose deaths rearranged local successions across Thuringia and Franconia.

Henry VI survived by luck of architecture: he had withdrawn to a stone window alcove — a niche set in the masonry wall, off the timber floor — and stayed there, reportedly with Archbishop Conrad, until rescuers reached the pair with ladders. Landgrave Louis, one of the feuding parties the court had convened to judge, also survived.

Aftermath

Chroniclers, monastic to a man, could not resist the material: proud lords of the empire meeting their end in a pit of filth invited moralising about vanity, and got it. Later tradition — impossible to verify — has Henry so shaken that he avoided Erfurt afterwards.

The feud itself was overtaken by events, and the disaster settled into history as the Erfurter Latrinensturz: the Latrine Fall of Erfurt, medieval Germany’s most undignified mass casualty event, and a standing reminder that in the twelfth century the most dangerous thing at court was not always the politics.