Lemont was originally known as Keepataw (after a Potawatomi chief) and a post office was established in 1840 as Keepatau. After that, it was named Athens and then Palmyra. The name Lemont (literally, 'the mountain' in French) was chosen in 1850 at the suggestion of Lemuel Brown, the postmaster and justice of the peace, or perhaps by his brother Nathaniel Brown.Callary, Edward. 2009. Place Names of Illinois. Champaign: University of Illinois Press, p. 197.
lemont was originally known as keepataw (after a potawatomi chief) and a post office was established in 1840 as keepatau after that it was named athens and then palmyra the name lemont (literally 'the mountain' in french) was chosen in 1850 at the suggestion of lemuel brown the postmaster and justice of the peace or perhaps by his brother nathaniel browncallary edward 2009 place names of illinois champaign university of illinois press p 197