"Eustachy Wołłowicz (Lithuanian: Eustachijus Valavičius; 1572–1630) was Bishop of Vilnius in 1616–1630. He was one of the more accomplished bishops of Vilnius in the 17th century.
A son of the Protestant father and Eastern Orthodox mother, Wołłowicz became a Catholic and was educated at the Jesuit Academy of Vilnius and the Pontifical Gregorian University in Rome and was ordained as a priest. In 1600, Wołłowicz became a member of the Vilnius cathedral chapter and provost (praepositus) of Trakai. At the same time, entered the court of the Grand Duke Sigismund III Vasa becoming a referendary (a type of judge; 1600–1615), later royal secretary (1605–1615) and deputy chancellor (1615–1618). He was known as a skilled diplomat and politician. He became bishop of Vilnius after the death of Benedykt Woyna [pl] in 1615. As bishop, Wołłowicz organized three diocesan synods (1618, 1623, and 1626). He was supportive of the various religious orders and helped them establish new monasteries. He personally invited Canons Regular of the Lateran to Antakalnis, a suburb of Vilnius. In a 1625 report to the pope, he claimed that during his nine-year tenure as bishop, there were more than 40 new Catholic churches and 27 new monasteries established in the diocese. Despite his reputation of a sincerely religious man, he was known for his tolerant attitude towards the Protestants and support of the Ruthenian Uniate Church." - (en.wikipedia.org 22.07.2021)
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