Where does “amasi” come from?

amasi (Latin) comes from Latin amasius, from Latin amō, from Latin Deus, from Latin dẹ̄vos, from Old Latin deivos, from Proto-Italic deiwos, from Proto-Indo-European deywós, from Proto-Indo-European dyew- — to be bright; sky, heaven.

amasi (Latin): genitive singular of amāsius; vocative singular...