Where does “vitsasaita” come from?

vitsasaita (Finnish) comes from Finnish vitsas, from Finnish vitsa, from Proto-Finnic vicca, from Proto-Germanic wiþjǭ, from Proto-Indo-European weyt-, from Proto-Indo-European wéy-, from Proto-Indo-European éǵh₂ — I.

Ancestry of “vitsasaita”, step by step

vitsasaita traces back through two separate lines of ancestry.

via Finnish vitsas

Step	Language	Word	Meaning
1	Finnish	vitsas	twig, wicker, withe
2	Finnish	vitsa	birch; wicker
3	Proto-Finnic	vicca	twig, wicker, withe
4	Proto-Germanic	wiþjǭ	cord, rope, thong
5	Proto-Indo-European	weyt-	that which winds or bends, branch, switch;...
6	Proto-Indo-European	wéy-	—
7	Proto-Indo-European	éǵh₂	I

via Finnish aita

Step	Language	Word	Meaning
1	Finnish	aita	fence; wall
2	Proto-Finno-Ugric	*aita	—
3	Proto-Uralic	*ajta	fence

Every word from Proto-Indo-European éǵh₂ →Every word from Proto-Indo-European wéy- →Every word from Proto-Indo-European weyt- →