Margaret ferch Rhys Ieunac Parents Rhys Fychan ap Rhys Mechyll ap Rhys Grûg ap Lord Rhys of Dinefwr, aka Rhys Ieuanc Gwladus ferch Gruffudd ap Llywelyn Children Madog Crypl Madog Fychan Siblings Margred (2) ferch Rhys Ieuanc ap Rhys Mechyll ap Rhys Gryg Ithel Fychan, lord of Mostyn NN ferch Rhys Ieuanc ap Rhys Mechyll