Where does “rhyfelwyr” come from?

rhyfelwyr (Welsh) comes from Welsh rhyfel, from Latin rebello, from Latin bello, from Latin bellum, from Latin bellus, from Latin villus, from Latin vellus, from Proto-Indo-European h₂welh₁- — to rule; strong, powerful; hair; wool.

Ancestry of “rhyfelwyr”, step by step

rhyfelwyr traces back through two separate lines of ancestry.

via Welsh rhyfel

StepLanguageWordMeaning
1Welshrhyfelwar
2LatinrebelloI renew war, I wage war again; I revolt
3LatinbelloI wage or carry out war, fight in war, war; I...
4Latinbellumwar; nominative neuter singular of bellus;...
5Latinbellusbeautiful, pretty, handsome; pleasant, agreeable,...
6Latinvillushair, tuft of hair, shaggy hair
7LatinvellusThe wool shorn from a sheep; fleece; wool; The...
8Proto-Indo-Europeanh₂welh₁-to rule; strong, powerful; hair; wool

via Welsh ŵyr

StepLanguageWordMeaning
1WelshŵyrSoft mutation of gŵyr; grandson, grandchild
2Middle WelshwyrSoft mutation of gwyr
Every word from Proto-Indo-European h₂welh₁-Every word from Latin vellusEvery word from Latin villus