User blog comment:It-Freaking-Melts~11!!/New Characters for Sons of Neptune Decoded/@comment-86.185.239.69-20110904124822/@comment-3146930-20110904125922

Actually, it was never stated those were the godly parents of the 7 demigods. They were just seven gods, some of which just so happen to be parents of demigods we already know are the seven. While it could be a large hint to the identities of the other 7, it could also be a red herring