Otto I Graf von Meissen ^1677,1678

  Notater:

Otto I (died early 1067) was the Margrave of Meissen from 1062 until his death, the second margrave of the family of the counts of Weimar and Orlamünde. He was a younger son of William III of Weimar and Oda, daughter of Thietmar, Margrave of the Saxon Ostmark. He inherited Orlamünde from his father in 1039 and Weimar from his brother William in 1062. He was appointed by the Emperor Henry IV to succeed William in Meissen as well. He became Advocate of the Cathedral of Merseburg in 1066.

Otto blev gift med Adela de Louvain, datter af Lambert II de Louvain og Oda of Lower-Lorraine, før 1060. (Adela de Louvain døde i 1083.)