Where does “Arttu” come from?

Arttu (Finnish) comes from Finnish Artturi, from English Arthur, from Middle English Arthure, from Latin Arthurus, from Welsh arth, from Proto-Brythonic arθ, from Proto-Celtic artos, from Ancient Greek ἄρτος — a cake or loaf of wheat bread; bread.

Ancestry of “Arttu”, step by step

StepLanguageWordMeaning
1FinnishArtturiArthur
2EnglishArthurGuinness stout
3Middle EnglishArthure—
4LatinArthurus—
5Welsharthbear
6Proto-Brythonicarθbear
7Proto-Celticartosbear
8Ancient 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 →