Where does “Willem” come from?

Willem (Dutch) comes from Middle Dutch willem, from Old Dutch *Willihelm, from Proto-Germanic Wiljahelmaz, from Proto-Germanic helmaz, from Proto-Germanic halmaz, from Proto-Indo-European ḱolh₂mos, from Proto-Indo-European ḱelh₂- — to pierce, strike; to stick; prick; stab.

Ancestry of “Willem”, step by step

StepLanguageWordMeaning
1Middle DutchwillemA male given name
2Old Dutch*Willihelm
3Proto-GermanicWiljahelmaz
4Proto-Germanichelmazhelmet
5Proto-Germanichalmazhalm; stem; stalk; straw; hay
6Proto-Indo-Europeanḱolh₂mosstalk
7Proto-Indo-Europeanḱelh₂-to pierce, strike; to stick; prick; stab

Words derived from “Willem

Every word from Proto-Indo-European ḱelh₂-