Where does “salier” come from?

salier (Old French) comes from Latin salārius, from Latin sāl, from Proto-Italic sāls, from Proto-Indo-European *sḗh₂l — salt.

Ancestry of “salier”, step by step

StepLanguageWordMeaning
1LatinsalāriusOf or pertaining to salt
2Latinsālsalt
3Proto-Italicsālssalt
4Proto-Indo-European*sḗh₂lsalt
Every word from Proto-Indo-European *sḗh₂l →Every word from Proto-Italic sāls →Every word from Latin sāl →