Where does “Reidun” come from?

Reidun (Norwegian) comes from Old Norse Hreiðunn, from Old Norse hreiðr, from Proto-Indo-European (s)kreyt-, from Proto-Indo-European (s)ḱer- — dung, manure, filth; manure, dung, filth.

Ancestry of “Reidun”, step by step

Step	Language	Word	Meaning
1	Old Norse	Hreiðunn	—
2	Old Norse	hreiðr	nest
3	Proto-Indo-European	(s)kreyt-	to wind; twist; bend
4	Proto-Indo-European	(s)ḱer-	dung, manure, filth; manure, dung, filth

Every word from Proto-Indo-European (s)ḱer- →Every word from Proto-Indo-European (s)kreyt- →Every word from Old Norse hreiðr →