Hildoard or Hildo, [1] was bishop of Cambrai from 790 to 816.
He was a liturgical reformer, closely tied to the court of Charlemagne. [2] His sacramentary is the only surviving exact copy, made around 812, of the Sacramentarium Hadrianum, sent out by Pope Hadrian I to Charlemagne. [3] [4]
He restored Maubeuge Abbey. [5]
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