I hate to be the bearer of bad news, but the Blood Ravens are more recently added chapter, and weren't around during the heresy. Their gene seed is a combination of Blood Angels, and the Srorm Crows chapters. The Storm Crows no longer exist, because of an incident like the book Flight of the Eisentein, and some fell to warp creatures, while most just joined them. They have since been expunged from Imperial records.
Thanks for the clarification I have to admit my only references were the Blood Ravens Omnibus and the RTS games.
@Jarmox, I'll have to check those out. I've gotten pretty aquainted with Abnett's 40k work (ie Eisenhorn, his contributions to the heresy series, Gaunts Ghosts, and partially through Ravenor.) But I hadn't heard too much feedback on the Ciaphas series.