Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
WARRENDER
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
From Warren, and der, from the old British dour, water, probably given to a Warren who lived near some water or river.
Surname type: Occupational name
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English