Is Aeron Cantref

Is Aeron was one of Cardiganshire’s, (Welsh: Sir Aberteifi or Ceredigion) three cantrefs in the Middle Ages.

The cantref was divided into four commotes:

• Is Coed
• Caerwedros
• Gwynionydd (Gwinionydd)
• Mebwynion (Mabwnion)

See medieval boundaries: Cardiganshire | Cantrefs  | Commotes | Gwestfâu | Sharelands See 1800 Census Act and later hundreds, parishes and townships: County of Cardigan | Hundred | Parish | Township