LOST IN THE SAUCE
The Sauce Apostle
As far as Ned knew, Rhaegar had kidnapped his sister and ran off. By the time he tracked down his sister and took Jon Snow from her Rhaegar was already dead. Plus Ned entered the war because the Mad King killed his pops and brother, and then demanded Jon Arryn turn over Ned and Robert to be killed as well, so the rebellion was inevitable regardless of how he felt about Rhaegar.You're saying Ned knew that Rhaegar wasn't a bad guy in the first place but went along with the foolery anyway?
Sounds like something @Khamsah and wolf set would do.