Complex sentence: Didacus was born at an unknown date into a poor but pious family the small village of San Nicolás del Puerto in Kingdom of Seville, whose parents gave him the name of Diego, a derivative of Santiago (St. James), the patron saint of Spain.
Split into simpler sentences: Didacus was born into a poor but pious family in the small village of San Nicolás del Puerto in the Kingdom of Seville. His parents gave him the name of Diego, a derivative of Santiago (St. James), the patron saint of Spain.