Otto II (died November 8, 1111) was a graf (count) and one of the founding members of the Habsburg family. He was the son of Werner I, Count of Habsburg. In 1108, Otto accompanied Kaiser Heinrich V on the warpath against Hungary. On his return, in 1111, he was murdered. He married Hilla von Pfirt (died by 1076), with whom he had two sons, Werner II, Count of Habsburg and Adelheid. Otto was probably the first person to adopt the title "von Habsburg".
The original version of this article was translated from this version of the German-language Wikipedia article de:Otto II. (Habsburg). Additional information about his wife was obtained from [1].