Where does “Pontypridd” come from?

Pontypridd (Welsh) comes from Welsh y, from Middle Welsh y, from Old Welsh ir, from Proto-Celtic sindos, from Proto-Indo-European sḗm, from Proto-Indo-European sem- — together, one.

Ancestry of “Pontypridd”, step by step

Pontypridd traces back through 3 separate lines of ancestry.

via Welsh y

StepLanguageWordMeaning
1Welshythe; that; which, whom
2Middle Welshyhis, its with reference to a masculine noun; triggers soft mutation of following consonant
3Old Welshirthe
4Proto-Celticsindosthis
5Proto-Indo-Europeansḗmone
6Proto-Indo-Europeansem-together, one

via Welsh

StepLanguageWordMeaning
1Welshhouse
2Middle Welshty
3Proto-Brythonictɨɣhouse
4Proto-Celtictegoshouse, dwelling
5Proto-Indo-European(s)teg-to cover; pole, stick, beam

via Welsh pont

StepLanguageWordMeaning
1Welshpontbridge
2LatinponsA bridge, a construction or natural feature that...
3Proto-Indo-Europeanpónteh₁spath, road
4Proto-Indo-Europeanpent-to pass; path
Every word from Proto-Indo-European sem-
Pontypridd — Etymology, Origin & Word History | Etymology Explorer