Simplify the following text for a Grade 9 native English-speaking person.
Original: His maternal grandparents were Furugh Afnan and Cecil Fadlo Hourani , who was an advisor to the late Tunisian president Habib Bourguiba , as well as an author ; Cecil Hourani is also the brother of Albert Hourani , a major historian of the Middle East .
Simplified: Cecil Fadlo Hourani used to be an author and also advisor to Habib Bourguiba , the late Tunisian president . Cecil Hourani was also the brother of Albert Hourani , a historian who studied about the Middle East .