mean 'wonder man'. italic=no or Merlin's Enclosure is an early name for Great Britain as stated in the third series of Welsh Triads.

Celticist Alfred Owen Hughes Jarman suggested that the Welsh name Myrddin was derived from the toponym Caerfyrddin, the Welsh name for the town known in English as Carmarthen. This contrasts with the popular folk etymology that the town was named after the bard (Henri d'Arbois de Jubainville,