Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
LEAL
As described in historical dictionaries
Patronymica Britannica (1860)
LEAL. LEALL. L O. Fr. and Scot.,
Origin: Iberian
Region of origin: Europe
Country of origin: Spain
Religion of origin: Christian
Language of origin: Spanish