Order of Saint Amyas
The Order of Saint Amyas, also known as the Knights Lorraine, was a military order sworn only to its Grandmaster - then King Guy de Bar of Oren. After Guy de Bar's coronation, the Order was disbanded.
Although it engages in violent spread of the Canonist Faith, it is not sworn to the Church of the Canon, and, as seen in The Dukes' War (1518-1521), it engages in secular conflicts.
More information can be found here.
https://www.lordofthecraft.net/forums/topic/120475-recruiting-the-order-of-saint-amyas/