Where does “baywedhen” come from?

baywedhen (Cornish) comes from Cornish baywydh, from Cornish gwydh, from Proto-Brythonic gwɨð, from Proto-Celtic widus, from Proto-Indo-European h₁weydʰh₁-, from Proto-Indo-European dwi-, from Proto-Indo-European dwóh₁ — two.

Ancestry of “baywedhen”, step by step

StepLanguageWordMeaning
1Cornishbaywydhbay trees, laurels
2Cornishgwydhtrees
3Proto-Brythonicgwɨðwood, trees
4Proto-Celticwiduswood, trees
5Proto-Indo-Europeanh₁weydʰh₁-to separate, divide
6Proto-Indo-Europeandwi-two; apart, asunder
7Proto-Indo-Europeandwóh₁two
Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Indo-European dwi- →Every word from Proto-Indo-European h₁weydʰh₁- →