In the same year, 1402, Owain captured his arch enemy, Reynald or Reginald Grey, 3rd Baron Grey de Ruthyn in an ambush in late January or early February at Ruthin.
Det samme år, i 1402, fangede Owain sin ærkefjende Reynald eller Reginald Grey, 3. baron Grey de Ruthyn i et baghold i slutningen af januar eller starten af februar i Ruthin.