Morcant Bulc was a Brythonic prince, probably a king, from Northern Britain, during the period between the end of the Roman Empire and the establishment of an English state during the early Middle Ages.
Morcant appears in a line of Men of the North from Old Welsh pedigrees. He was apparently preceded by his father, Cuncar, and succeeded by his son, Coledauc. Nothing else is known of him. However, historians have conjectured that his kingdom may have lain in Gododdin (Lothian), Alt Clut (Strathclyde) or Bryneich (Northumberland) in the late 6th century.
Morcant’s first name is a form of Morgan. It is possible that he may therefore be identified with other Morgans found elsewhere in the Life of St. Kentigern and the writings of Nennius: