Where does “Publilius” come from?

Publilius (Latin) comes from Latin Publius, from Latin pōpulus, from Proto-Italic poplos — army.

Ancestry of “Publilius”, step by step

Step	Language	Word	Meaning
1	Latin	Publius	—
2	Latin	pōpulus	—
3	Proto-Italic	poplos	army

Publilius — Etymology, Origin & Word History | Etymology Explorer