Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
MILL
As described in historical dictionaries
Patronymica Britannica (1860)
MILL. The old Sussex family of this name originally wrote themselves At-Milue, i.e. ' at the mill' See however under Mills.
Surname type: Location or geographical feature
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English