Where does “Saintonge” come from?

Saintonge (English) comes from French Saintonge, from Middle French Xaintonge, from Old French Xainctonge, from Latin Santones, from Proto-Celtic swantos, from Proto-Indo-European h₁su-, from Proto-Indo-European h₁wes- — good; to be cheerful, happy; to eat, to feast.

Ancestry of “Saintonge”, step by step

StepLanguageWordMeaning
1FrenchSaintonge—
2Middle FrenchXaintonge—
3Old FrenchXainctonge—
4LatinSantonesA Celtic tribe of Aquitania
5Proto-Celticswantosdesire
6Proto-Indo-Europeanh₁su-good
7Proto-Indo-Europeanh₁wes-good; to be cheerful, happy; to eat, to feast
Every word from Proto-Indo-European h₁wes- →Every word from Proto-Indo-European h₁su- →Every word from Proto-Celtic swantos →