Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
LILLY
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
A beautiful flower. Llille, in the Welsh, the place by the river or stream, from Lli, a stream, and Lle, a place. Llu, an army, a troop; Llellu, the place of the army. In the Cornish-British Lhy is a troop, a company of horsemen, and le or li, a place.
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