Complex sentence: Van Patten was born in New York City to Josephine Rose Acerno, an Italian-American, and Richard Byron Van Patten, who had distant Dutch ancestry from a great-grandfather.
Split into simpler sentences: Van Patten was born in New York City, the daughter of of Josephine Rose (née Acerno) and Richard Byron Van Patten. Her mother was an Italian-American, and her father had distant Dutch ancestry from a great-grandfather.