His feast day is 29 July .
Saint Sulien , Sulian , or Silin was the reputed 6th - century founder - abbot of a monastery at Luxulyan in Cornwall .
Saint Sulien 's feast day is 29 July .
Saint Sulien , Sulian , or Silin was the reputed 6th - century founder - abbot of a monastery at Luxulyan in Cornwall .