Page "Merfyn Frych" Paragraph 13

The discovery of a cross inscribed Crux Guriat () on the Isle of Man and dated to the 8th or 9th century raised the question of whether Gwriad's possible connection to " Manaw " was to Manaw Gododdin, once active in North Britain, or to the Isle of Man ().

John Rhys suggested that Gwriad might well have taken refuge on the Isle of Man during the bloody dynastic struggle between Cynan and Hywel prior to Merfyn's accession to the throne, and that the cross perhaps does refer to the refugee Gwriad, father of Merfyn.

He goes on to note that the Welsh Triads mention a ' Gwryat son of Gwryan in the North '.

Other locations for " Manaw " have been suggested, including Ireland, Galloway and Powys.