Agreed with Tywin, dragon blood is dragon blood. Remember Tyrion called Brown Ben out on just having a drop, and he got along swimmingly with Dany's dragons. Though Ben may have had Targ blood, I can't remember.
As Rhaegar's BFF, Connington seems too faithful to Aegon to just be passing him off as an imposter Targ knowingly. No, Connington is being duped by Varys and Illyrio. Aegon himself may not be the wiser.
As for Septa Lemore, there has been speculation that she is one of the sandsnakes mothers or Ashara Dayne. What was her tie to Rhaegar, chamber maid to Elia? Is Ashara related to Dark Star (sp?), who's trying to foment war between Dorne and Kings Landing. Perhaps he is trying to soften the landing for the Golden Company too, similar to Varys trying to keep the inept Cercie in power.
As Rhaegar's BFF, Connington seems too faithful to Aegon to just be passing him off as an imposter Targ knowingly. No, Connington is being duped by Varys and Illyrio. Aegon himself may not be the wiser.
As for Septa Lemore, there has been speculation that she is one of the sandsnakes mothers or Ashara Dayne. What was her tie to Rhaegar, chamber maid to Elia? Is Ashara related to Dark Star (sp?), who's trying to foment war between Dorne and Kings Landing. Perhaps he is trying to soften the landing for the Golden Company too, similar to Varys trying to keep the inept Cercie in power.