Welsh Teifi

← Welsh Tafwys (mention)

← English Thames (mention)

← English Tamar (mention)

← English Tavy (mention)

← English Towy (mention)

← English Teviot (mention)

← English Tweed (mention)

← English Taw (mention)

← English Tiverton (mention)

→ English Thames (cognate)

→ English Tiverton (cognate)

→ English Tivy (derived)

→ Welsh Aberteifi (compound)