Complex sentence: The founder of the monastery was famous Bishop St. Niketa (338-420) from Bela Palanka, and the first church was built in the late 4th century, somewhere between 392-395th AD.
Split into simpler sentences: The founder of the monastery was famous Bishop St. Niketa (338-420). And the first church was built in the late 4th century, somewhere between 392-395th AD.