The Knights of Seth were a 19th-century British-German Neo-Sethian group that attempted to resurrect medieval Gnostic and dualistic Christian ideas. While achieving a certain popularity among wealthy young Englishmen in the 1850s, the Knights never gained considerable influence and were by many considered a mere gentlemen's club rather than a religious movement. Apart from a handful of members in Edinburgh and Berlin, the group presently appears to be almost extinct. The group is sometimes referred to by its Latin name Ordo Equester Sethiani.