In 775, Hadrian alleged that Hildeprand had joined a conspiracy of Hrodgaud of Friuli and Arechis II of Benevento, but there is no evidence of Hildeprand's involvement.
En 775, Hadrián alegou que Hildeprando se unira á conspiración de Hrodgaud de Friúl and Arechis II de Benevento, pero non hai evidencia de que Hildeprando estivese involucrado.