Gruffudd Fychan II hereditary prince of Powys Fadog (1306–1369) Parents Elizabeth Le Strange Gruffudd of Rhuddallt Gruffydd ap Madog Fychan Children Owain Glyndŵr Lowri ferch Gruffudd Fychan Tudur ap Gruffudd Morfudd ferch Gruffudd Fychan ap Gruffudd ap Madog Fychan Isabel ferch Gruffudd Siblings Isabel ferch Gruffudd ap Madog Fychan ap Madog Crupl