noun, plural Mon·ta·gnards, (especially collectively) Mon·ta·gnard.
Examples from the Web for montagnard
The young artillery commander was considered by all at Nice to be a pronounced (p. 242) "Montagnard," that is, an extreme Jacobin.The Life of Napoleon Bonaparte|William Milligan Sloane
Probably it is in a country where the language would be the Montagnard.
A Montagnard exclaimed, "He is choking with the blood of Danton."Lectures on the French Revolution|John Emerich Edward Dalberg-Acton
Each Montagnard is a Jupiter in his own conceit, and hurls his thunderbolt with what force he may.