Visio Karoli Grossi

The Visio Karoli Crassi or Visio Karoli Grossi (meaning "Vision of Charles the Fat"), also called the Visio Karoli (Tertii) Imperatoris ("Vision of [Emperor] Charles III"), is an anonymous work of Latin prose from around 900. It was composed at Reims and depicts a vision of his ancestors warning the Emperor Charles the Fat of the coming downfall of his family, the Carolingians.

The work was produced in or near Reims, possibly by someone in the circle of Fulk the Venerable, the Archbishop of Reims, because the Visio credits the intercession of Saints Peter and Remigius (the patron saint of Reims) with preserving the Carolingian line. Fulk was also a Carolingian partisan in 888. Among the works that probably influenced the vision of Charles the Fat prominence can be given to the De visione Bernoldi presbyteri written by Hincmar of Reims in the middle of the ninth century.

Among the ancestors who appear to Charles in his vision are his father, Louis the German; uncle, Lothair I; and cousin, Louis the Younger. He is also visited by Louis the Younger's daughter, Ermengard, and her husband, Boso, and son, Louis of Provence. Charles had recognised the right of the latter to inherit Provence after Boso died on 11 January 887, but Charles himself was deposed in November and died in January 888, leaving the young Louis and his mother without a defender. The Visio appears to have been written as a defence of the young Louis's claim.

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