User blog comment:Il Lupo/New Assassin's Creed Game/@comment-3141096-20110430173701/@comment-1153722-20110430200210

Seeing as Altaïr and Maria must've had their child - Desmond's ancestor - not too long after Bloodlines and that the Hidden Gun is Codex page number 28 (written very close to his death), I'd say... no.