Where does “Laighin” come from?

Laighin (Irish) comes from Old Irish Laigin, from Old Norse staðr, from Proto-Germanic stadiz, from Proto-Indo-European stéh₂tis, from Proto-Indo-European *steh₂-.

Laighin (Irish): Leinster

Definitions

Leinster

Ancestry of “Laighin”, step by step

Step	Language	Word	Meaning
1	Old Irish	Laigin	Leinstermen
2	Old Norse	staðr	a place, spot, abode; a city, town, palace; a...
3	Proto-Germanic	stadiz	place, location
4	Proto-Indo-European	stéh₂tis	standing, position
5	Proto-Indo-European	*steh₂-	—

Every word from Proto-Indo-European *steh₂- →Every word from Proto-Indo-European stéh₂tis →Every word from Proto-Germanic stadiz →