Where does “Firmi” come from?

Firmi (French) comes from English Firmin, from Latin Firminus, from Latin Firmus, from Proto-Italic fermos, from Proto-Indo-European dʰer-mo-s, from Proto-Indo-European dʰer- — to support; to hold.

Ancestry of “Firmi”, step by step

StepLanguageWordMeaning
1EnglishFirmin—
2LatinFirminusmale variant of Firmina
3LatinFirmusstrong, powerful
4Proto-Italicfermos—
5Proto-Indo-Europeandʰer-mo-sholding
6Proto-Indo-Europeandʰer-to support; to hold
Every word from Proto-Indo-European dʰer- →Every word from Proto-Indo-European dʰer-mo-s →Every word from Proto-Italic fermos →