Where does “a-tres” come from?

a-tres (Tagalog) comes from Tagalog a-, from Spanish A, from Latin Ad, from Latin illic, from Latin ille, from Latin olle, from Proto-Italic *olnos — that.

a-tres (Tagalog): third day of the month

Definitions

third day of the month

Ancestry of “a-tres”, step by step

Step	Language	Word	Meaning
1	Tagalog	a-	at
2	Spanish	A	bishop
3	Latin	Ad	toward, to
4	Latin	illic	he, she, it, yonder, that, overthere; in that...
5	Latin	ille	that; those; "; demonstrative pronoun "; that...
6	Latin	olle	Archaic form of ille
7	Proto-Italic	*olnos	that

Every word from Proto-Italic *olnos →Every word from Latin olle →Every word from Latin ille →