Rhydderch ab Iestyn King of Gwent and Morgannwg (?-1033) (0950–1033) Parents Iestyn ap Gwrgant Children Caradog ap Rhydderch Rhys ap Rhydderch Gruffudd ap Rhydderch Siblings Gwenllian ferch Iestyn ap Gwrgan ab Ithel Nest ferch Iestyn ap Gwrgan ab Ithel Madog ab Iestyn ap Gwrgan ab Ithel of Rhuthion Catrin ferch Iestyn ap Gwrgan Rhys ab Iestyn ap Gwrgan ab Ithel of Resolfen Caradog ab Iestyn Gruffudd ab Iestyn ap Gwrgan ab Ithel