User blog comment:Suriken88/Ezio's speculated death in Embers/@comment-1891670-20111214174449/@comment-1153722-20111214201706

And an illegitimate child of Cesare, not growing up with any of his family members, would be aware of his father's Templar ties, let alone even know who is father's murderer was, while there are little to none accounts on the events that transpired during the Siege of Viana?