The marriage between Sophia and Janusz took place in one of the cathedrals of Brest-Litovsk (now Brest) in accordance with the Orthodox rites on October 1, 1600. Due to the strength of Sophia’s passion about her Orthodox beliefs, she was instrumental in the promulgation of measures allowing the inhabitants of her ancestral lands (in present-day Belarus) to choose to stay Orthodox rather than converting to Catholicism. Other measures were enacted forbidding Uniate (Catholic) priests from replacing Orthodox priests when the latter died.[1] Sophia was generous in her donations to churches, monasteries, and the clergy.