Gruffudd ap Cynan ab Owain Gwynedd Grandson of Owain Gwynedd (d. 1200) Parents Cynan ab Owain Gwynedd Children Siblings Gwerful Goch ferch Cynan ab Owain Gwynedd Gwenllian ferch Cynan ab Owain Gwynedd Maredudd ap Cynan ab Owain Gwynedd Cadwallon ap Cynan ab Owain Gwynedd