Where does “Tullianus” come from?

Tullianus (Latin) comes from Latin tullius, from Etruscan 𐌕𐌖𐌋.

Ancestry of “Tullianus”, step by step

Step	Language	Word	Meaning
1	Latin	tullius	A jet of water, a waterfall, downpour
2	Etruscan	𐌕𐌖𐌋	—

Tullianus — Etymology, Origin & Word History | Etymology Explorer