Joseph John Lando (born December 9, 1961) is an American actor, most recognizable for playing Byron Sully on the TV series Dr. Quinn, Medicine Woman.Lando attended Stevenson High School in Lincolnshire, Illinois.His first acting role was as a patrolman in Star Trek IV: The Voyage Home. He received attention from his role as Jake Harrison in the soap opera One Life to Live, and he went on to co-star in the popular drama Dr. Quinn, Medicine Woman as Michaela Quinn's love interest, Byron Sully.