Where does “Caerfaddon” come from?

Caerfaddon (Welsh) comes from Welsh caer, from Proto-Celtic *kaɸerūxs — sheep.

Ancestry of “Caerfaddon”, step by step

Caerfaddon traces back through two separate lines of ancestry.

via Welsh caer

StepLanguageWordMeaning
1Welshcaerfort, fortress, enclosed stronghold, castle,...
2Proto-Celtic*kaɸerūxssheep

via Welsh baddon

StepLanguageWordMeaning
1Welshbaddon
Every word from Proto-Celtic *kaɸerūxs