Complex sentence: Maxey returned to the practice of law in Paris, this time with his wife's nephew Benjamin Denton and Henry Lightfoot, who later married Maxey's adopted daughter Dora Maxey.
Split into simpler sentences: Maxey returned to the practice of law in Paris, this time with his wife's nephew Benjamin Denton and Henry Lightfoot. The latter of the two later married Maxey's adopted daughter Dora Maxey.