Otto inherited the county of Klettgau & Altembourg from his father; Werner I, Count of Habsburg.

In 1108, Otto accompanied King Henry V on a campaign against Hungary.

Otto is presumed to be the first person to adopt the title Graf von Habsburg.

He married Hilla, countess von Pfirt[1] (died c. 1076), with whom he had two children, Werner II and Adelheid.

This article about a member of the German nobility is a stub.