It happens: seedlings get mislabeled. This one was from a batch identified as 'Old Blush' x self, which it clearly is not. Sometimes a few seeds stray into the adjacent row of another cross during sowing, and sometimes a seedling drops onto the work bench during repotting and loses its identity that way. There are numerous ways for an individual to become misidentified. Myriad are the tribulations for the hybridizer attempting to document (accurately?) his work. Alas.
Since I did a lot of work with 'Midnight Blue' in 2006, I am assuming this is one of its progeny. What the other parent might have been is up for debate. Could have been 'Tradescant', 'Dragon's Blood', 'Arthur Bell', or 'Brown Velvet'; all four were used in 2006. I could guess, but that would be pointless, since I have seen similar seedlings result from a wide variety of crosses. Ah well, its a decent individual, and has earned a spot out in the final test garden. Its all fun and games, ain't it? *laughs*