Complex sentence: Anne's paternal grandparents were Sir Richard Wydeville and Joan Bedlisgate, and her maternal grandparents were Peter I of Luxembourg, Count of Saint-Pol, Conversano and Brienne, and Margaret de Baux.
Split into simpler sentences: Anne's paternal grandparents were Sir Richard Wydeville and Joan Bedlisgate. Her maternal grandparents were Peter I of Luxembourg, Count of Saint-Pol, Conversano and Brienne, and Margaret de Baux.