Dictionary of Medieval Names
from European Sources

Herwin m. Old High German heri 'host, army' + Old High German wini 'friend'.

France
Latin
c823 Airoenus (nom) irminon-vol2 33, Wan, Aroinus (nom) ibid. 33, CE
Cite as: S.L. Uckelman. "Herwin". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Herwin.