Bogomil
Bogomil (Cyrillic: Богомил, also Bogumil) is a masculine given name of Slavic origin. It is composed of the Slavic words 'bog' (god) and 'mil' (dear) and literally means 'Dear to God'.
en.wikipedia.org/wiki/Bogomil_%28name%29
It seems to be linked to Bulgarian or Macedonia.
Saint-paul from Wilno
The Church? or are you saying that your relation was a saint?
en.wikipedia.org/wiki/St._Peter_and_St._Paul%27s_Church,_Vilnius