Complex sentence: His son, Bill Jr., is president and CEO of the company today and his daughter-in-law, Virginia Cecil, oversees the equestrian center at the estate, and is also on the Biltmore board of directors.
Split into simpler sentences: His son, Bill Jr., is president and CEO of the company today. His daughter-in-law, Virginia Cecil, oversees the equestrian center at the estate and is on the Biltmore board of directors.