Maredudd ap Cynan ab Owain Gwynedd Welsh grandson of Owain Gwynedd (1200–1212) Parents Cynan ab Owain Gwynedd Children Siblings Gwerful Goch ferch Cynan ab Owain Gwynedd Gwenllian ferch Cynan ab Owain Gwynedd Cadwallon ap Cynan ab Owain Gwynedd Gruffudd ap Cynan ab Owain Gwynedd