He was married to Beatrix (died February 23 after 1125), probably a daughter of Duke Hermann II of Swabia from the Conradine dynasty and sister-in-law of the Salian Emperor Conrad II.
Donald C. Jackman received the Ph.D. in 1987 from Columbia University with the dissertation entitled The Konradiner: a study in genealogical methodology dealing with the family of the Conradines.