Where does “återvandrare” come from?

återvandrare (Swedish) comes from Swedish återvandra, from Swedish vandra, from Old Swedish vandra, from Middle Low German wanderen, from Old Saxon *wandarōn, from Proto-West Germanic *wandarōn — to waver, change, fluctuate.

Ancestry of “återvandrare”, step by step

Step	Language	Word	Meaning
1	Swedish	återvandra	remigrate
2	Swedish	vandra	to wander, to hike
3	Old Swedish	vandra	—
4	Middle Low German	wanderen	—
5	Old Saxon	*wandarōn	—
6	Proto-West Germanic	*wandarōn	to waver, change, fluctuate

Every word from Proto-West Germanic *wandarōn →Every word from Old Saxon *wandarōn →Every word from Middle Low German wanderen →