Complex sentence: Her maternal grandparents are King Fuad I. and Queen Nazli of Egypt and her paternal grandparents are Reza Shah Pahlavi and Queen Tadj ol-Molouk of Iran, she is also the niece of Farouk I of Egypt.
Split into simpler sentences: Her maternal grandparents were King Fouad I and Queen Nazli of Egypt; and her paternal grandparents were Reza Shah Pahlavi and Queen Tadj ol-Molouk of Iran. She is also the niece of Farouk I of Egypt.