Dictionary of Medieval Names
from European Sources

Achere m. Proto-Germanic *agio 'blade' + Old High German heri 'host, army'.

France
Latin
c823 Acharius (nom) irminon-vol2 108, Palatiolum
Middle French
1388 Achere thierry
Cite as: J. Uckelman, S.L. Uckelman. "Achere". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Achere.