User blog comment:Hereticalthoughts/Why Solaire is not, never was, and never will be the Firstborn/@comment-16047389-20140529151914/@comment-18016240-20140529165408

No, but I figured that was a different theory, I personally think that the Firstborn may have created the brotherhood of the sun and might be it's grandmaster, but I don't think he has any direct relation to Solaire.