Gruffudd ab Iestyn ap Gwrgan ab Ithel Parents Iestyn ap Gwrgant Children 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 Rhydderch ab Iestyn