Namesakes
Cyril III
(a.k.a. Daoud) (m) 11xx-1243 
Coptic Popes and Patriarchs of Alexandria 1235-1243
Cyril IV
(a.k.a. Daoud) (m) c. 1816-1861
Coptic Popes and Patriarchs of Alexandria 1853-1861
Mohammad Al-Abbasi
(a.k.a. Daoud) (m) 1914-1972
Jordanian Prime Ministers 1970