THIETMAR [I], son of --- (-1 Jun 932). Markgraf. Tutor of the future Heinrich I King of Germany[3]. The necrology of Fulda records the death in 932 of "Thiommar com"[4].
m ---, daughter of ---. Widukind records the mother of the first wife of Heinrich I King of Germany as matertera of "Sigifridi", son of Thietmar[5]. Jackman suggests that she was named Judith, quoting the Memorial book lists of Reichenau (two) and St Gallen (one) all of which name (in order) "…Gero, Iudita…", on the assumption that this refers to Gero's mother rather than his wife, although the latter would be more normal in such lists[6]. He also proposes a Konradiner origin, based it would seem only on onomastics, suggesting that she was the daughter of Konrad Graf in der Wetterau & his wife Glismut.
Graf Thietmar & his wife had three children