Old High German ōt, Old Saxon ōd 'wealth, riches' + Old High German, Old Saxon gēr 'spear'.
For the English cognate, see Edgar. See also Ottokar.
Cite as: S.L. Uckelman. "Otger". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2018, no. 1. http://dmnes.org/2018/1/name/Otger.