In HBO's Rome, Brutus's mother Servillia stays in the city to reunite with Caesar while Pompey, Brutus, and the rest of the Senate flee his legion. She's also later heavily involved in Caesar's assassination. Do we know whether either of these events happened as depicted?

by td4999
Dinocrocodile

This is a bit late but /u/Astronoid answered this question a while ago. There's actually a whole FAQ on HBO's Rome now so that's pretty great.