Knights Templar in England
An inventory by Geoffrey Fitz Stephen reveals that by 1185, the Order of the Knights Templar had extensive holdings in London, Hertfordshire, Essex, Kent, Warwickshire, Worcestershire, Salop, Oxfordshire, Cornwall, Lincolnshire and Yorkshire. The involvement of Templars in financial matters is highlighted by Walter of Coventry's story of Gilbert de Ogrestan, the Knight Templar accused of embezzling taxes collected in the Saladin tithe of 1188. He was severely punished by his contemporary Master.
Mythology of Carnivàle
Despite being of only tangential importance to the series' two seasons, the Knights Templar have an elaborate backstory that was left untold due to the cancellation. The Pitch Document described the fictional Order, then simply called the "Order Templar", as a fraternity of fellow travelers that was once charged by the Roman Catholic Church with locating and aiding the Avatars. Knauf said both Henry Scudder and his father Hilton were members of the Templars; Scudder was so because he wanted access to their knowledge and library. The Saunière manuscript would have been "mildly relevant" for the future storyline.