Where does “amaon” come from?

amaon (Bikol Central) comes from Portuguese -ama, from Portuguese -ame, from Latin -amen, from Latin -men, from Proto-Italic *-mn̥.

Ancestry of “amaon”, step by step

Step	Language	Word	Meaning
1	Portuguese	-ama	forms nouns indicating a disorderly group or...
2	Portuguese	-ame	forms nouns indicating a group or collection of...
3	Latin	-amen	—
4	Latin	-men	forms neuter nouns of the third declension
5	Proto-Italic	*-mn̥	—