Verbal Kint
Superstar
Could just be foreshadowing by D&B, but Littlefinger has hinted he knows the truth. Or at least has some suspicions on the veracity of the commonly accepted story.
Yeah it seems people probably suspect something. Littlefinger basically implied to the viewrs in the underground grave that raeghar probably didnt rape her and they were probably in love.
Aswell as stannis questioning whether jon is neds son.
Also why wouldnt baristan know something was up. If he knew raeghar was this upstanding charismatic dude, why would he believe he kidnapped and raped her.
Hinting that he knew/thought that Rhaegar didn't kidnap/rape her and knowing they had a child and that Ned Stark is raising him as his own b*stard son are completely different things. Matter of fact if Littlefinger knew or had proof that's exactly the sort of thing he'd have used to his advantage in some way.