Dictionary of Medieval Names
from European Sources

Hardulf m. Old Saxon hard, Old High German hart 'strong, hard' + Old High German wolf, Gothic wulf 'wolf'.

France
Latin
c823 Ardulfus (nom) irminon-vol2 74, Palatiolum
Cite as: S.L. Uckelman. "Hardulf". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Hardulf.