Where does “Vilma” come from?

Vilma (Finnish) comes from German Wilma, from German Wilhelmina, from German Wilhelm, 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 “Vilma”, step by step

Vilma traces back through two separate lines of ancestry.

via German Wilma

StepLanguageWordMeaning
1GermanWilma
2GermanWilhelmina
3GermanWilhelmWilliam
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 English Wilma

StepLanguageWordMeaning
1EnglishWilmaA substitute for wilco when used for the phonetic...
Every word from Proto-Indo-European ḱelh₂-