Where does “aelodiaeth” come from?

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

Ancestry of “aelodiaeth”, step by step

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