Catrin ferch Iestyn ap Gwrgan Parents Iestyn ap Gwrgant Children Margred ferch Rhys ap Tewdwr Siblings Gwenllian ferch Iestyn ap Gwrgan ab Ithel Nest ferch Iestyn ap Gwrgan ab Ithel Madog ab Iestyn ap Gwrgan ab Ithel of Rhuthion Rhys ab Iestyn ap Gwrgan ab Ithel of Resolfen Caradog ab Iestyn Gruffudd ab Iestyn ap Gwrgan ab Ithel Rhydderch ab Iestyn