• Married:
• Died: 16 Apr 1039

  Research Notes:

The primary source which confirms his parentage has not yet been identified. Graf von Weimar. ["Heinricus…Romanorum imperator augustus" donated property "que Gebehardus comes in beneficium habuit, in comitatu Piligrimi et in pago Matihgowe" to Kloster Fulda by charter dated 30 Dec 1014, with the consent of "Willehelmi comitis et fratris eius Popponis". Emperor Heinrich II donated property of "Willihelmus comes et Boppo frater eius in villa Winetre in pago Auelgouue in comitatu Ezzonis comitis" to Kloster St Petrus at Bonn by charter dated 25 Feb 1015. It appears unlikely that these charters refer to Wilhelm [III] Graf von Weimar and his brother Poppo as the latter was already "Markgraf" of Carniola by 1012 and would presumably have been referred to by this title in documentation in subsequent years. However, no other brothers of these names have yet been identified at that time.] Graf in Eichsfeld 1022. ¹