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Dictionary of Medieval Names
from European Sources

Warnger m. Germanic war(in) 'guard' + Old High German, Old Saxon gēr 'spear'.

France
Latin
1147 Warengerii (gen) clairvaux-12thc 18
Cite as: S.L. Uckelman. "Warnger". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Warnger.