Welsh Frwdwr

← Proto-Brythonic *frud (derived)

← Proto-Brythonic *duβr (derived)

← Proto-Celtic *srutom (derived)

← Proto-Celtic *dubros (derived)

← Middle Welsh Frwdwr (inherited)

← Middle Welsh ffrwd (derived)

← Middle Welsh dwfr (derived)

← Middle Welsh dwr (mention)