Board Thread:Oblivion/@comment-186.137.154.220-20140309085729/@comment-71.201.38.163-20140426164902

He says this in the first volume of Mythic Dawn Commentaries: "When my voice returned, it spoke with another tongue. After three nights I could speak fire."

That might imply that he learned Dragontonggue and a Shout (Fire Breath). No one else can learn it in three nights except dragons (because it's their language) and someone who is Dragonborn. So, yes, Mankar Camoran *might* be Dragonborn