Yslani ferch Gruffudd ap Cynan, aka Elen or Alswn Parents Gruffudd ap Cynan Children Siblings Gwenllian ferch Gruffydd Gwenllian ferch Gruffudd ap Cynan Cadwallon ap Gruffydd Merinedd ferch Gruffudd ap Cynan Rhanullt ferch Gruffudd ap Cynan Margred ferch Gruffudd ap Cynan Susanna ferch Gruffudd Cadwaladr ap Gruffudd Owain Gwynedd