Complex sentence: Her paternal grandparents were Bertrand III del Balzo, Count of Andria and Squillace, and Marguerite d'Aulnay, and her maternal grandparents were Nicola Orsini, Count of Nola, Senator of Rome (27 August 1331-14 February 1399), and Jeanne de Sabran.
Split into simpler sentences: Her paternal grandparents were Bertrand III del Balzo, Count of Andria and Squillace, and Marguerite d'Aulnay. Her maternal grandparents were Nicola Orsini, Count of Nola, Senator of Rome (27 August 1331-14 February 1399), and Jeanne de Sabran.