"And you will stay for eighty years in Gwales in Penfro"

Gwales (sometimes Ynys Gwales) is the Island of Grassholm which lies about 8 miles off the southwest coast of Pembrokeshire.

 

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In his 1901 book Celtic Folklore: Welsh and Manx,  Sir John Rhŷs, first Professor of Celtic at the University of Oxford, refers to the belief that there is a submerged island near Grassholm, which intermittently rises to the surface. Indeed, one of Sir John’s sources claimed to have met an eye-witness to this event!

Today, Grassholm is a gannet sanctuary owned by the RSPB.