Gronwy Fychan ap Tudur Fychan ap Gronwy of Penmynydd Est 1320 - 23 Mar 1382 (drowned) Parents Malt ferch Madog ap Iorwerth ap Madog Tudur ap Goronwy Children Morfudd ferch Gronwy Fychan ap Sir Tudur Fychan ap Gronwy of Penmynydd Siblings Rhys ap Tudur Angharad ferch Tudur ap Gronwy ap Tudur Hên Gwerful ferch Tudur Fychan ap Gronwy Ednyfed ap Tudor ap Gronwy Gwilym ap Tudur Goronwy Fychan ap Tudur Maredudd ap Tudur