Welsh croen

← Proto-Brythonic *krʉn (inherited)

← Proto-Indo-Iranian *čárma (cognate)

← Proto-Indo-European *(s)ker- (derived)

← Latin corium (cognate)

← Old Irish croiccenn (cognate)

← Proto-Slavic *skorà (cognate)

→ Welsh croeniog (affix)

→ Welsh croenliw (compound)

→ Old Irish croiccenn (cognate)