The name Firmin is of Latin origin and means 'firm, steadfast'. It was quite popular during the Middle Ages but has since become less common. Firmin is typically used as a masculine given name.
The name Firmin experienced varied popularity over the years, with a notable peak in 1927 and 1928, reaching 11 and 13 births respectively. However, it seems to have been less common during other periods, as evidenced by the consistent low numbers of births between 1913 and 1942.