Complex sentence: Kevin J. O'Connor was born in Chicago, Illinois, the son of Patricia Connelly, a teacher, and James O'Connor, a retired Chicago police officer, and also has a brother, Christopher O'Connor (a Southside school teacher).
Split into simpler sentences: Kevin J. O'Connor was born in Chicago, Illinois, the son of James O'Connor, a retired Chicago police officer, and Patricia Connelly, a teacher. Kevin also has a brother, Christopher O'Connor (a Southside school teacher).