Cinmarc or Kynmarch Rheged, fl 560s-ca 570s.

The son of Merchiaun and the father of Urien. We can imagine that in Cinmarc’s time, if not earlier, the rulers of Rheged established an overlordship of the Isle of man. Cinmarc is known to have had a substantial fleet of ships for in around the year 560 he and his contemporaries, Rhydderch and Clydng, raided Anglesey in revenge for the death of his brother Elidyr at the hands of the Welsh king Rhun. They did a lightning strike and returned, but this incurred the wrath of Rhun whose march across north England in revenge passed into legend.540