At that moment they had just 4 or 5 family members - one in Rome and others right near with army. If honestly, I cheated a bit - saved game before any assassin mission and reloaded if assassin was catched (just 1 time) :) Anyway - assassins was trained well and the most risky faction leader was killed in first try in spite of 15% (or 12%) success chance. And els - I had four assassins, so I killed all in 2 turns and they hvent time to get new members. But it was just a test. Im not trying to kill those 2 new members (i sent my assassins to continue work with Julii family :) ), I will just loose senate missions until they outlaw me - Im strong enough at the moment and other Romans are week as I used strategy to get the cities what game concept gives to them - so I took biggest greek cities and some gaulic to prevent Julii movement.