Hermann apparently married twice, but there is no indication in the available documents indicating whether Oda or Hildesuit was the mother of his children.
Marriage Information:
Oda/Hildesuit married Hermann Billung von Sachsen, Duke in Saxony, son of Billung von Sachsen. (Hermann Billung von Sachsen was born between 905 and 910 in Sachsen and died on 27 Mar 973.)
Research Notes: