Where does “Aso” come from?

Aso (Italian) comes from Latin Asis, from English assist, from Middle English assisten, from Old French assister, from Latin assisto, from Latin ad-, from Latin īn-, from Latin în — in.

Ancestry of “Aso”, step by step

Step	Language	Word	Meaning
1	Latin	Asis	Asia
2	English	assist	To help; To make a pass that leads directly...
3	Middle English	assisten	—
4	Old French	assister	to assist, to attend
5	Latin	assisto	to place oneself somewhere, stand (at or by), post oneself; approach, come upon; stop or halt in a position
6	Latin	ad-	to; usually prefixed to verbs, in which cases it...
7	Latin	īn-	un-, non-, not
8	Latin	în	in, at, on, upon, from (space)
9	Latin	en	lookǃ beholdǃ; reallyǃ?; come onǃ
10	Proto-Italic	en	in
11	Proto-Indo-European	h₁én	in

Every word from Proto-Indo-European h₁én →Every word from Latin īn- →Every word from Latin ad- →