- Kingdom: Guenodotia (capital)
- Coordinates: 53.188 degrees North, 4.463 degrees West
- OS Grid Reference: SH3568
The hall was erected under the lordship of Einion in the late fifth century. Aberffraw was the site was a pre-Roman occupation as well.
- "Arthur Rhyfelfawr"
- The Demon of Lleuenydd