Wang Lun
When Liangshan Marsh is first mentioned in "Water Margin", it is occupied by bandits led by Wang Lun, Du Qian and Song Wan. But Song apparently joins Liangshan after the band has been developed to a considerable size by Wang and Du. Song comes later with some men to add to its strength. Wang Lun takes the place of chief, with Du Qian placed second and Song third.