This is Kurtis Krammovitch's canonical story in Shades of Empire Page 68. I feel comofortable posting it because Boney has made a lot of changes so it's only really relevant as a comparison rather than providing any spoilers:
"Kurtis Krammovitch was an Ostermarker Hedgewise with a grudge. When he was young, he watched his parents, both Hedgefolk, be burned as Witches by a passing Bright Magister. Krammovitch's uncle, who was also Hedgefolk, thereafter raised him. On his eighth birthday he showed his first signs of being one of the Blessed Few when he healed a calf that should have died in childbirth by using nothing but his tear-stained hands. His powers developed quickly, and by the age of nineteen Krammovitch was tremendously skilled in Hedgecraft, uncannily so; further, he had a plan.
Later that year Krammovitch was captured by a young Grey Magister after the Shadowmancer spotted him fumbling a simple curse on a shopkeeper who had clearly fleeced him. As he had planned, Krammovitch had a new master.
Fifty years later, Krammovitch is now a Lord Magister of the Grey Order, and has trained many new apprentices, all Hedgefolk, all subtly allowed to maintain their rural beliefs instead of being fully indoctrinated into the Greys. From this position he works hard to support the Hedgefolk where he can, and to manoeuvre his apprentices into positions where they can do the same. However, he is beginning to believe all may not be as it seems; what if the Greys purposefully recruited him to do exactly as he is doing: to train the Hedgefolk in proper Collegiate magic?"
There's also Markus Fischer, who doesn't exist yet because it's 2522 IC in Shades of Empire:
"One of the Blessed Few, Fischer was apprenticed to an elderly Hedgewise at the tender age of ten. He was a quick student, and soon became a Hedge Master in his own right. By his seventeenth birthday, he was eking out a simple life on the lower Reik selling charms to superstitious bargees, and supporting the local network of Hedgefolk.
However, in the early 2500s, a Magister observed him plying his trade. The young Fischer, outwitted by a cunning Shadowmancer, was captured and taken to the Colleges. There, he was given the choice of death or training as a Magister, and wisely chose the latter. A decade later, Fischer left the Colleges as one of their most talented and powerful Grey Magisters, and was soon assigned to the Reikland State Army. There he served with distinction, and was eventually attached to the Imperial Guard, the Emperor's own regimental bodyguard, before attaining the title of Lord Magister.
After twenty years of being a Grey Guardian, Markus still holds tight to his Hedgefolk beliefs. He may no longer practice Hedgecraft, but he still quietly supports the Hedgefolk and maintains his religious convictions. However, lately he has come to believe his Order may be aware of his beliefs; indeed, he fears they may be using him to gain access to the Hedgefolk he once held so dear, especially since it appears his own master in the Grey Order, Lord Magister Krammovitch, the man who captured him, may once have been one of the Hedgefolk as well"
