Background
His father is sometimes said to be Count Udo from the Wetterau, and his mother an unknown daughter of Herbert I, Count of Vermandois.
His father is sometimes said to be Count Udo from the Wetterau, and his mother an unknown daughter of Herbert I, Count of Vermandois.
His appointment as duke marked the return of ine rule over Swabia for the first time since 948. There is considerable confusion about and his family. He is often identified with Cuno of Öhningen.
There is also some debate about the identify of 's wife. When Duke Otto I unexpectedly died during the Imperial campaign in Italy of 981-982, he left no heirs. To fill the vacancy, Emperor Otto II (who may have been 's brother-in-law) appointed as Duke of Swabia.