| Ergyng eventually became a mere cantref, the Welsh equivalent of a hundred. |
| Each cantref was further divided into commotes, with Penychen made up of five such commotes, one being Glynrhondda. |
| Cantref aim to make the most of this funding and have 11 additional homes approved in Pentop, Cardigan. |
| In the early Middle Ages, Glynrhondda was a commote of the cantref of Penychen in the kingdom of Morgannwg, a sparsely populated agricultural area. |
| Gwent may also have extended east of the River Wye into areas known as Cantref Coch, which later became the Forest of Dean. |
| The cantref court dealt with crimes, the determination of boundaries and matters concerning inheritance. |
