In 1553 , during Edward VI 's reign , Penrhos was granted to John - ap - Owen ( also known as John Derwas ) .
Penrhos was a large estate on Holy Island , Anglesey , in north - west Wales .
In 1553 , during Edward VI 's reign , estate was granted to John - ap - Owen ( also known as John Derwas ) .
Penrhos was a large estate on Holy Island , Anglesey , in north - west Wales .