Isabel ferch Gruffudd Peerage person ID=654258 Parents Gruffudd Fychan II Elen ferch Thomas ap Llywelyn ab Owain ap Maredudd Children Ieuan ap Adda ap Iorwerth Siblings Owain Glyndŵr Lowri ferch Gruffudd Fychan Morfudd ferch Gruffudd Fychan ap Gruffudd ap Madog Fychan Tudur ap Gruffudd Partners Adda ap Iorwerth Ddu