A favourite student of Bishop Fulbert of Chartres, he eventually became acting treasurer of the church of Poitiers from 1024 to 1026.
[1] According to Adelman, another pupil of Fulbert's, Hildegar imitated his teacher's mannerisms and speech.
[2] When Hildegar was appointed treasurer of Poitiers, Fulbert wrote to congratulate him and give him advice.
[4] Hildegar also corresponded with Duke William V of Aquitaine, whom he calls a "friend" (amicus) in the technical sense of a lay supporter of a cleric.
[6] He may have written some of the duke's official correspondence, such as the letter to Anselm, bishop of Vercelli.