Complex sentence: Kuczynski has been married twice, first to Jane Dudley Casey (daughter of Joseph E. Casey, member of the U.S. House for the 3rd district of Massachusetts)--their children are businesswoman Carolina Madeleine Kuczynski, the journalist Alex Kuczynski, and John-Michael Kuczynski.
Split into simpler sentences: Kuczynski has been married twice, first to Jane Dudley Casey, the daughter of Joseph E. Casey, a former member of the United States House of Representatives for the 3rd district of Massachusetts. Their children are businesswoman Carolina Madeleine Kuczynski, the journalist Alex Kuczynski, and John-Michael Kuczynski.