Welsh garth

← Old English geard (cognate)

← Proto-Celtic *gortos (inherited)

← Irish gort (cognate)

← Proto-Indo-European *gʰórts (inherited)

← Proto-Indo-European *gʰórdʰs (mention)

← Proto-Indo-European *ǵʰortós (mention)

← Latin hortus (cognate)

→ English Penarth (mention)

→ English Oystermouth (mention)

→ French gord (cognate)

→ Irish gort (cognate)