Note 980 — Chapter XIII · THE FEAST OF FOOLS
Reading edition
Fouquier-Cholet, Hist. des Comtes de Vermandois, 159, says that Heribert IV (ob. †1081) persuaded the clergy of the Vermandois to suppress the fête de l’âne. This would have been a century before Belethus wrote. But he does not give his probatum, and I suspect he misread it.