Herman Billung Margrave of the Billung March  24
- Born: Bet 900 and 912
- Marriage (1): Oda 
- Marriage (2): Hildegard of Westerburg 
- Died: 27 Mar 973, Quedlinburg, Sachsen-Anhalt, Germany
Burke says he was Conrad I, le Pacifique, Roi de Bourgogne Transjurane.
Hermann Billung maybe was married twice: According to the chronicles of St Michael's Abbey in Lüneburg, a Countess Oda died on 15 March in an unknown year after 973, the Xanten annals noted the death of one Ode, spouse of Duke Hermann, on the same day. She probably was related with the royal Ottonian dynasty; Henry the Fowler's grandmother was named Oda (herself a member of the Billung dynasty), which was also the name of his sister. A second wife Hildesuith or Hildegard of Westerburg is mentioned in the chronicles, but her relation to Oda remains unclear. Hildegard was also the name of the spouse of Hermann's son Bernard. The name of Hermann's grand-daughter Oda of Meissen indicate that Oda was the mother of his children.
I have given the children to Oda, but some or all of them could just as well be Hildegard's children.
Noted events in his life were:
• Acceded: Margrave of the Billung March, 936. was the Margrave of the Billung March from 936 until his death.
• Acceded: effective Duke of Saxony, 961. Though never Duke of Saxony himself, while Otto (who was the enthroned Duke of Saxony) was in Italy from 961 until 972, Hermann served as Otto's personal representative in governing Saxony. Towards the end of his life, Hermann was the effective Duke in all but name.
Herman married Oda  [MRIN: 2473].
Herman next married Hildegard of Westerburg  [MRIN: 551618638].