Namesakes
Cosmas I
(a.k.a. Kosma) (m) 6xx-730 
Coptic Popes and Patriarchs of Alexandria 729-730
Cosmas II
(a.k.a. Kosma) (m) c. 800-858
Coptic Popes and Patriarchs of Alexandria 851-858
Cosmas III
(a.k.a. Kosma) (m) 8xx-932
Coptic Popes and Patriarchs of Alexandria 920-932