Lamontagne Family History
Lamontagne Surname Meaning
French:: habitational name for someone from any of several places called La Montagne or a variant of the topographic name Montagne 1 with fused feminine definite article la.
from la montagne ‘the mountain’ used as a soldier's name and probably also as a nickname for a very large man.
Compare Lamountain.
Source: Dictionary of American Family Names 2nd edition, 2022