Complex sentence: This would place Cynllibiwg in the region later known as Rhwng Gwy a Hafren, but its nature and extent is unknown; the editor suggests that seven cantrefs should amended to three, perhaps Arwystli, Maelienydd, and Elfael.
Split into simpler sentences: This would place Cynllibiwg in the region later known as Rhwng Gwy a Hafren, but reveals nothing about its extent and nature. The editor suggests that seven cantrefs should amended to three, perhaps Arwystli, Maelienydd, and Elfael.