Robert I or Rupert (697 – 758), was a count in the Hesbaye region and Duke of Neustria. His father's name is known to be Lambert. He was a count palatine under Childeric III.
Robert married Williswinda, daughter of Adalhelm, Grundherr im Wormsgau. Robert and Williswinda had three children:
- Cancor (d. 771), Count of Hesbaye and Rheingau
- Anselm (killed in battle in Roncesvalles, Spain, 778), Count Palatine
In a charter of 741/2 which exists in several versions, wherein a Robert, son of Lambert, Count or Duke of the "pago Hasbaniensi et Masuarinsi", the land of Hasbanians and Masuarians, granted lands near Diest to Sint-Truiden Abbey.
The third continuation of the Gesta Abbatum Trudonensium, in its report of the charter, describes Robert as Robertus comes vel dux Hasbanie ("count or Duke of Hasbania").
This Robert, the Gesta says, is also the one mentioned as a Duke in the medieval biography (Vita) of Bishop Eucherius of Orléans. When Charles Martel exiled Eucherius to Cologne this was under the custody of the said Duke Robert of Hasbania (Hasbanio Chrodoberto duce).
- Bouchard 2015, p. 186.
- Despy (1961) gives a critical review of this document and its versions.
- Gesta Abbatum Trudonensium MGH version, (p.371)
- Vita Eucherii episcopi Aurelianensis MGM Script. rer. mer. VII, 1920 pp.50-51
- See Bouchard p.188 and p.307: footnote 55. Primary source for this: Lorsch necrology under 18 February: "Ruperti comitis. Hic fuit maritus domne Williswinde" .
- Despy, G (1961), "La charte de 741-742 du comte Robert de Hesbaye pour l'abbaye de Saint-Trond" (PDF), Annales du XXXVIIe Congrès de la Fédération Archéologique et Historique de Belgique, Bruxelles, 24-30 Août 1958: 82–91
- Bouchard, Constance Brittain (2015). Rewriting Saints and Ancestors: Memory and Forgetting in France, 500-1200. University of Pennsylvania Press. ISBN 9780812290080.