Where does “populer” come from?

populer (Middle English) comes from Old French populaire, from Latin populāris, from Latin -āris, from Latin -ālis, from Proto-Italic -ālis.

Ancestry of “populer”, step by step

Step	Language	Word	Meaning
1	Old French	populaire	—
2	Latin	populāris	—
3	Latin	-āris	—
4	Latin	-ālis	—
5	Proto-Italic	-ālis	—