Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
LAMBARD
As described in historical dictionaries
Patronymica Britannica (1860)
LAMBARD. LOMBARD, A native of Lombardy in Italy. In the middle ages the Lombards were great traffickers in money and the precious metals, and Lombard Street in London derives its name from them. This name is sometimes confounded with Lambert.