Zac Efron's middle names are his grandfathers' names: David and Alexander.
=== Quranic names (Arabic names) ===We can see many Arabic names in the Quran and in Muslim people, such as Allah, Muhammad, Khwaja, Ismail, Mehboob, Suhelahmed, Shoheb Ameena, Aaisha, Sameena, Rumana, Swaleha, etc
 Some people have two surnames, one inherited from each parent

