Iorwerth 'Ddu' ap Ednyfed Peerage person ID=654234 (b. 1311) Parents Ednyfed 'Gam' ab Iorwerth Foel Gwladus ferch Llywelyn Children Adda ap Iorwerth Ddu Myfanwy ferch Iorwerth Ddû ab Ednyfed Gam of Llys Pengwern Margred ferch Iorwerth Ddû ab Ednyfed Gam ab Iorwerth Foel Partners Angharad ferch Adda