Come on guys. He was neither English nor Welsh. These terms did not exist for many years later. The word "Welsh" is derived from a Germanic word "Waelisc" meaning "foreigner" as that was what the invading Saxons considered the remnants of the Celtic tribes who lived in the western part of Britain. Patrick or Succat to give him his Celtic name was if anything Romano-British.There is even a dispute as to where he was born anywhere from what is now South Wales to what is now Dumbartonshire.