Where does “aelodaethau” come from?

aelodaethau (Welsh) comes from Welsh aelodaeth, from Welsh aelod, from Middle Welsh aelaut, from Proto-Brythonic *aɣlọd, from Proto-Celtic *ɸaɡlātus, from Proto-Indo-European peh₂ǵ- — to attach.

Ancestry of “aelodaethau”, step by step

StepLanguageWordMeaning
1Welshaelodaethmembership
2Welshaelodmember; insider; limb
3Middle Welshaelaut—
4Proto-Brythonic*aɣlọd—
5Proto-Celtic*ɸaɡlātus—
6Proto-Indo-Europeanpeh₂ǵ-to attach
Every word from Proto-Indo-European peh₂ǵ- →Every word from Proto-Celtic *ɸaɡlātus →Every word from Proto-Brythonic *aɣlọd →