Thietmar names his paternal uncle Liuthar, recording that he attempted to deprive his mother of all her possessions after the death of his brother Siegfried.
Graf im Derlingau und im Nordthüringgau 982. He succeeded in 982 as LOTHAR I Markgraf der Nordmark. The Annalista Saxo records that he was installed as Markgraf after "Teoderici ducis et marchionis" was deprived of the dignity following the destruction by the Slavs of the churches "Branneburch et Havelbergan" and their relapse into paganism.
Thietmar records the death on 25 Jan, in the first year of the reign of King Heinrich II (1003), of "Markgraf Liuthar" and his burial at Köln. 1
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