Complex sentence: He has two sons from his previous marriage to Gail Winston; as of 2010, one, Simon Rich, was a writer for "Saturday Night Live", a live, late-night television sketch comedy and variety show.
Split into simpler sentences: He has two sons from his previous marriage to Gail Winston. One of those sons, Simon Rich, as of 2010, was a writer for "Saturday Night Live", a live, late-night television sketch comedy and variety show.