FC Sion from locals, and played their first competitive league fixture in 1914, again a 3–2 victory, against FC Monthey. In 1919, Sion formally organised its managerial structure, with Gilliard becoming vice-president and Charles Aymon taking the presidency. From 1932, Sion played in the fourth tier of Swiss football, where they spent much of the next 20 years, briefely interrupted by promotion to the third tier in 1944, quickly followed by relegation in 1946. In 1952, Sion returned to the third tier. Five years later, Sion gained promotion again to the National League B, followed five years later by promotion to the
Priory of Sion 1889 and 1895, which is problematic considering that de Sède's book was trying to make a case that these documents were centuries old. In 1969, English actor and science-fiction scriptwriter Henry Lincoln became intrigued after reading "Le Trésor Maudit". He discovered one of the encrypted messages, which read ""À Dagobert II Roi et à Sion est ce trésor, et il est là mort"" ("To Dagobert II, King, and to Sion belongs this treasure and he is there dead"). This was possibly an allusion to the tomb and shrine of Sigebert IV, a real or mythical son of Dagobert II which