Bertegar
m.
Old English beorht 'bright' from Proto-Germanic *berhtaz + Old High German, Old Saxon gēr 'spear'.
Preview. DO NOT cite as: S.L. Uckelman. "Bertegar". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 1. http://dmnes.org/2015/1/name/Bertegar.