King Mark in Arthurian legend, king of Cornwall, husband of Iseult and uncle of Tristram. In different versions of the story of Tristram and Iseult, he is represented as a noble king and trusting husband, or as the type of treachery and cowardice.
St Mark an Apostle, companion of St Peter and St Paul, traditional author of the second Gospel, sometimes identified with the John Mark whose mother's house in Jerusalem was a meeting-place for the Apostles. He is also sometimes said to have been the young man who according to Mark 14:51 followed Jesus after he had been arrested, but escaped capture.
St Mark is patron of Venice, to which his body was brought in the 9th century. His symbol as an evangelist is a lion, one of the tetramorph, and his feast day is 25 April.