Where does “lokatīvs” come from?

lokatīvs (Latvian) comes from Latin locativus, from Latin locō, from Latin locus, from Old Latin stlocus, from Proto-Italic stlokos, from Proto-Indo-European stel- — to put, to place; to locate.

lokatīvs (Latvian): locative case

Definitions

locative case

Ancestry of “lokatīvs”, step by step

Step	Language	Word	Meaning
1	Latin	locativus	locative
2	Latin	locō	to put, place, set
3	Latin	locus	place, spot; a passage of literature; "in the...
4	Old Latin	stlocus	—
5	Proto-Italic	stlokos	—
6	Proto-Indo-European	stel-	to put, to place; to locate

Every word from Proto-Indo-European stel- →Every word from Proto-Italic stlokos →Every word from Old Latin stlocus →