In 1194 Rhys was defeated in battle by Maelgwn and Hywel, who imprisoned him in Nevern castle, though Hywel later released his father without Maelgwn's consent.
År 1194 besegrades Rhys i strid av Maelgwn och Hywel, som spärrade in honom i Nevern castle, även om Hywel senare släppte fadern fri, utan Maelgwns tillåtelse.