Where does “Arthuis” come from?

Arthuis (Old Welsh) comes from Proto-Brythonic arθ, from Proto-Celtic artos, from Ancient Greek ἄρτος — a cake or loaf of wheat bread; bread.

Ancestry of “Arthuis”, step by step

StepLanguageWordMeaning
1Proto-Brythonicarθbear
2Proto-Celticartosbear
3Ancient Greekἄρτοςa cake or loaf of wheat bread; bread
Every word from Ancient Greek ἄρτος →Every word from Proto-Celtic artos →Every word from Proto-Brythonic arθ →