Dictionary of Medieval Names
from European Sources

Darwin m. Frankish daroth, Old German darodh, Old High German tart 'lance, javelin' + Old High German wini 'friend'.

France
Latin
c823 Daroinus (nom) irminon-vol2 40, CE
Cite as: S.L. Uckelman. "Darwin". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Darwin.