Where does “villakehrääjä” come from?

villakehrääjä (Finnish) comes from Finnish villa, from Finnish Vilhelm, from Swedish Vilhelm, from Old High German Willahelm, from Old High German helm, from Proto-West Germanic helm, from Proto-Germanic helmaz, from Proto-Germanic halmaz — to pierce, strike; to stick; prick; stab.

Ancestry of “villakehrääjä”, step by step

villakehrääjä traces back through two separate lines of ancestry.

via Finnish villa

StepLanguageWordMeaning
1Finnishvillawool; villa
2FinnishVilhelmWilliam of foreign historical persons
3SwedishVilhelm
4Old High GermanWillahelmWilliam
5Old High Germanhelmhelmet
6Proto-West Germanichelmhelmet
7Proto-Germanichelmazhelmet
8Proto-Germanichalmazhalm; stem; stalk; straw; hay
9Proto-Indo-Europeanḱolh₂mosstalk
10Proto-Indo-Europeanḱelh₂-to pierce, strike; to stick; prick; stab

via Finnish kehrääjä

StepLanguageWordMeaning
1Finnishkehrääjänightjar; European nightjar, Caprimulgus...
2Finnishice
3Proto-Finno-Ugric*ja
4Proto-Germanicjahwand, also
5Proto-Germanic-hwand; Forms distributives from interrogatives
6Proto-Germanic-hwe
7Proto-Indo-European-kʷeand; Forms distributives from interrogatives
Every word from Proto-Indo-European ḱelh₂-Every word from Proto-Indo-European ḱolh₂mosEvery word from Proto-Germanic halmaz