Where does “Lupatus” come from?

Lupatus (Medieval Latin) comes from Latin Lupus, from Proto-Italic lukʷos, from Proto-Indo-European wĺ̥kʷos — wolf.

Ancestry of “Lupatus”, step by step

Step	Language	Word	Meaning
1	Latin	Lupus	—
2	Proto-Italic	lukʷos	—
3	Proto-Indo-European	wĺ̥kʷos	wolf

Lupatus — Etymology, Origin & Word History | Etymology Explorer