Complex sentence: Several of the brothers'friends from New York, including Marie Dressler, Ben Hecht, helped them in their later escapades: another friend, Irving Berlin, started, but did not complete, a musical based on Wilson's life.
Split into simpler sentences: Several of the brothers'friends from New York, including Marie Dressler and Ben Hecht, helped them in their later escapades. Another friend, Irving Berlin, started, but did not complete, a musical based on Wilson's life.