Welsh gwlyb

← Proto-Brythonic *gwlɨb (inherited)

← Proto-Celtic *wlikʷos (inherited)

← Proto-Indo-European *wleykʷ- (root)

← Proto-Indo-European *wleykʷ- (inherited)

→ Welsh gwlych (mention)

→ Welsh gwlith (mention)

→ Irish fliuch (cognate)

→ Scottish Gaelic fliuch (cognate)

→ Manx fliugh (cognate)

→ Old Irish fliuch (cognate)