Where does “ystên” come from?

ystên (Welsh) comes from Middle Welsh ysten, from Middle English stene, from Old English stǣna, from Proto-West Germanic *stainijā, from Proto-Germanic stainijǭ — a stonen vessel.

Ancestry of “ystên”, step by step

StepLanguageWordMeaning
1Middle Welshysten—
2Middle Englishstenewaterpot
3Old Englishstǣnastone jug, a pot of stone or earth; stone jug, a...
4Proto-West Germanic*stainijāstonen vessel
5Proto-Germanicstainijǭa stonen vessel
Every word from Proto-Germanic stainijǭ →Every word from Proto-West Germanic *stainijā →Every word from Old English stǣna →