• Born: Abt 1050, Hohenstaufen, Swaben, Bayern
• Married: After 24 Mar 1079
• Died: 6 Apr 1105

  Research Notes:

The Tabula consanguinitatis Friderici I regis et Adelæ reginæ (which provided the basis for their divorce) names "ducem Fridericum, qui Stophen condidit" as son of "Fridericus de Buren". "Hildegardis…cum filiis meis, Ottone…Argentinenis ecclesie episcopo Suevorumque duce Friderico, Lodewico, Walthario, Cunrado et filia mea Adalheida" made a donation to the monastery of St Fides at Schlettstadt in Alsace dated 1094, presumably just before she died. The De Fundatione Monasterii Sancti Fides Sletstatensis names "Fredericus dux Alemannorum [qui fuit Friderici ducis Swevie], qui Romani imperatoris filiæ coniugo, et duo eius fratres Argentinensis episcopus Otto et Conradus". "Ottone Argentinensi…episcopo" and "fratres mei dux…Suetiæ Fridericus, Ledeuvicus et Galtharius" donated property in "Scelstat villa, in pago Alsatiæ et in comitatu Beirricheim" to the abbey of Conques by charter dated 23 Jul 1095, naming "matre…nostra fratreque nostro Conrado…defunctis".

He was installed as FRIEDRICH I Duke of Swabia at Easter 1079 by Heinrich IV King of Germany. Jackman speculates that his theory concerning a possible Konradiner origin of Friedrich's mother could have justified Friedrich claiming Swabia for which no other genealogical basis is found, although this begs the question of the extent to which ducal appointments in Germany were based on family relationship in the 11th century. He built the castle of Stauf near Göppingen from which the family eventually took its name.

The Gesta Friderici of Otto of Freising records his death "in senectate" and burial "in monasterio Laureacensi". ¹