Complex sentence: The name Rhwng Gwy a Hafren appears in various medieval lists of cantrefs and commotes, and is rendered in Latin in the works of Gerald of Wales, though the territories associated with it are not always consistent.
Split into simpler sentences: The name Rhwng Gwy a Hafren appears in various medieval lists of cantrefs and commotes, and is rendered in Latin in the works of Gerald of Wales. However, the territories associated with it are not always consistent.