Son/daughter of a Bishop in Croatia? Perhaps...

POPOVIC son of a Priest in Croatia? Perhaps-

"The Church was a thousand years old before it definitively took a stand in favor of celibacy in the twelfth century at the Second Lateran Council held in 1139, when a rule was approved forbidding priests to marry. In 1563, the Council of Trent reaffirmed the tradition of celibacy."

Christianity was definately accepted by Croatians prior to the Council of Trent.

Robert