Where does “siya” come from?

siya (Tetelcingo Nahuatl) comes from Spanish silla, from Old Spanish siella, from Latin sella, from Proto-Italic sedlā, from Proto-Indo-European sed-lo-.

siya (Tetelcingo Nahuatl): chair

Definitions

chair

Ancestry of “siya”, step by step

Step	Language	Word	Meaning
1	Spanish	silla	chair; saddle
2	Old Spanish	siella	chair
3	Latin	sella	seat, chair; sedan chair; saddle
4	Proto-Italic	sedlā	—
5	Proto-Indo-European	sed-lo-	—

Every word from Proto-Indo-European sed-lo- →Every word from Proto-Italic sedlā →Every word from Latin sella →