Robert I or Rupert (c. 697 – 758) was a count or duke in the Hesbaye region. His father's name is known to be Lambert.
It has been proposed that this is the same Robert who married Williswinda who founded Lorsch Abbey. This Williswinda had three children: Count Cancor (died 771) Anselm (killed in battle in Roncesvalles, Spain, 778), Count Palatine Thuringbert
Primary sources
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.Despy (1961) gives a critical review of this document and its versions.
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").Gesta Abbatum Trudonensium MGH version, (p.371)
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).Vita Eucherii episcopi Aurelianensis MGM Script. rer. mer. VII, 1920 pp.50-51
The connection to Williswinda has been proposed by some historians because her late husband had the name Robert, as is mentioned only once in the Necrology of Lorsch abbey.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" .
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