Karol Grycz-Śmiłowski

In 1934 he published A contemporary faith from the Holy Land ("Z ziemi świętej nowoczesne Wierzę") in which he presented himself as a free thinker, heir to the Polish Brethren.

In 1936 he founded a small group started to publish the quarterly magazine Free Religious Thought ("Wolna Myśl Religijna").

In 1937 at a meeting in Łódź he founded the free religious association "Bracia Polscy", which in 1945 changed its name to "Jednota Braci Polskich".

[3] Grycz-Śmiłowski aimed to follow the general outlines of the original Socinians, to proclaim the compatibility of faith with reason, and oppose the Trinity.

Shortly before Grycz-Śmiłowski's death in 1959 he was permitted to attend the 16th International Association for Liberal Christianity and Religious Freedom Congress in Chicago.