"Mayflower: The Pilgrim’s Adventure," made in 1979, is a TV movie that some have mocked for including romantic storylines—comparing it to “the Love Boat without a shuffleboard.” Despite this criticism, the film succeeds in conveying a sense of what the perilous voyage was truly like. As an informative afterward notes, characters such as Priscilla Mullins (played by Jenny Agutter), John Alden (Michael Beck), Myles Sta…