Complex sentence: Barbara Siggers Franklin had a son, Vaughn (whom C. L. adopted), by a previous relationship, and in 1940 C. L. fathered a daughter, Carl Ellan Kelley, out of wedlock by a teenager in his congregation.
Split into simpler sentences: Barbara Siggers Franklin had a son by a previous relationship, Vaughn, whom C. L. adopted. In 1940, C. L. fathered a daughter, Carl Ellan Kelley, out of wedlock by a teenager in his congregation.