Unfortunately, trying to answer Jah's question (what happened to L. Cornelius Cinna, possible conspirator?), I realized the problem - because all I can google is about his dad, L. Cornelius Cinna as in Caesar's first father-in-law. Many thanks to Silvia for finding all the original sources!!! However, I don't see that anyone claims Cinna was necessarily a murderer, but that he was with the conspirators on the Capital. And I betcha a whole lot of politicians, in the walk from Pompey's theatre, joined in the crowd whether or not they'd been there or not. Of course, reading the sources, it's just fascinating to watch how many politicians in the Senate blew with the wind in the post-assassination months. Led by Cicero, and bemused by Antony's apparent willingness to forgive and forget, at first it was a chance for everyone to jump and yell "YAY!" like Cicero - then over the months, you can see the Caesarians becoming more powerful. But personally, I always thought there was something about Octavian's utter adamantine determination that the assassins should all be punished that produced a groundswell. So if Cinna was pro-assassination in March, there's no guarantee he was (publicly) still saying that in July, unless someone has more specific info!

And the REAL groundswell probably took place in late July, with the infamous "comet" and the reaction of the common people. I think we cannot underestimate just how that changed the political dynamic - Caesar as a god.

I also wonder how different Roman history might have been if Brutus had been able to give the kind of speech that brought the crowd to him, in the hours after the assassination. Apparently, he couldn't, and the crowd started swinging away from the 'liberators' as of that day.