Land division in Ceredigion
Cantrefs, commotes, hundreds and parishes
R.A. Dodgshon (Early Society and Economy) admirably described the hierarchy of the cantrefi or cantrefs (the three major divisions of the county), the cymydau or commotes (ten subdivisions of the cantrefi), the forty gwestfâu into which the commotes were divided, and the four or five rhandiroedd or sharelands of each gwestfa. This gives a total of 260 sharelands for Ceredigion, of which the names of only a sixth survive.
The gwestfâu were actual tax units appearing in Crown documents; some of their names incorporate elements still known in modern usage. Thus, the original names of Nanteos was Neuadd Llawdden (after the medieval patriarchal figure, Llawdden).
Cantrefs
Cardiganshire was split into the three cantrefs of:
- Penweddig
- Uwch Aeron
- Is Aeron
Commotes
The cantrefs were subdivided into 10 commotes:

- Penweddig which was divided into three commotes:
- Genau’r Glyn (Geneu Glyn)
- Perfedd
- Creuddyn
- Uwch Aeron which was divided into three commotes:
- Mefenydd
- Anhuniog
- Pennardd
- Is Coed
- Caerwedros
- Gwynionydd (Gwinionydd)
- Mebwynion (Mabwnion)
Hundreds
Ceredigion was split into the six Hundreds and one borough:
- Geneur-Glynn – Hundred
- Ilar (Lower Division) – Hundred
- Ilar (Upper Division) – Hundred
- Moyddyn – Hundred
- Penarth – Hundred
- Troedyraur – Hundred
- Cardigan – Borough
Parishes
There were 68 parishes in the county. The boundaries of some of these have changed and are now known as Community Councils.
See medieval boundaries: Cardiganshire | Cantrefs | Commotes | Gwestfâu | Sharelands See 1800 Census Act and later hundreds, parishes and townships: County of Cardigan | Hundred | Parish | Township |