A son of that exquisite Swiss canton of Grisons, Georg Ca' jacob was thirty-two years old and in the prime of life when, with Conrad Grebel in the house of Felix Manz in Zurich, the momentous decision was taken to form the Brethren in Christ." Called Blaurock for the rest of his brief life because of a blue coat he wore once at a Bible Class, he was the guiding spirit of the Brethren for the next four years of intense campaigning activity which followed.

He was all over Switzerland, coming and going, always preaching wherever he went. When there was a difficult or critical job to be done, he was either called upon to do it or he offered himself willingly. In those four years he got to know the insides of a considerable number of prisons, sharing the hardships of them with many brothers and sisters. He never resisted arrest, yet frequently escaped or was allowed to escape.

Finally, he decided to assist a preaching effort in the Italian Tyrol, which was then Imperial (Austrian) territory. His Swiss citizenship gave him no protection whatever from the Catholic authorities and his fate was certain. He was burnt at the stake in Chiusa in 1529 at the age of thirty-seven.

Described by a contemporary as ''straightforward and simple; in matters of faith and in divine zeal; he acted wonderfully and valiantly in the cause of Truth". (51)