User blog comment:Master Sima Yi/Assassinews 05-08-'14 – Assassin's Creed: Rogue announced/@comment-199.96.205.93-20140805193014/@comment-5019018-20140805193419

Or Shay killed all of the Assassins who knew his identity. Really, there could be any number of reasons why he wasn't mentioned.

Also, it's Rogue. Rouge is the French word for red.