Complex sentence: He was born in New York City to John Winthrop Chanler and Margaret Astor Ward, in a sea of wealthy and interconnected Hudson River families that included the Astors, Livingstons, Winthrops and Stuyvesants.
Split into simpler sentences: He was born in New York City to John Winthrop Chanler and Margaret Astor Ward. His families included the Astors, Livingstons, Winthrops and Stuyvesants.