Several authors had a hand in drafting the Catechism: Valentinus Smalcius, Hieronim Moskorzowski, Johannes Völkel and others. It is likely that some of the text had been prepared by the Italian exile Fausto Sozzini, who had settled among the Polish Brethren in 1579, without ever formally joining, and who died in the year before the Catechism was drafted. Despite his lack of any official status in the church Sozzini had been influential in bringing the Polish church round to a Christology which closely resembled what he had learnt from his uncle Lelio Sozzini in exile in Switzerland as a young man.