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Dictionary of Medieval Names
from European Sources

Lombard m. Late Latin Longobardus, Langobardus 'Lombard', lit. 'long beard', derived from Proto-Germanic *langaz 'long' + Proto-Germanic *bardaz 'beard'.

The Langobards were a Germanic tribe who invaded Italy in the 6th C. The use of this term as a personal name reflects a trend in late-medieval/early Renaissance Italy for ethnic descriptives as given names.

Italy
Latin
1376 Lombardo (abl) DouGen1 p. 61
1265x1339 Lombardini (gen) BBC-Berg 92
Cite as: S.L. Uckelman. "Lombard". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 3. http://dmnes.org/2015/3/name/Lombard.