Is that how it works? Because I've had several Hunnish hordes attack me in Illyria and after one massive seige on one my of cities I was able to beat them back. Once I had an army in stock then I started going out and killing all of their faction families and leaders. I saved the game prior to killing the faction leader which I thought was the last one and even used spies to check out if there were any other. After I killed him another hunnish leader popped up in the next turn and eventually another one. I basically killed like a dozen family members, is it possible to have family members when your a horde?

I reloaded the save and used the fog cheat to search the map and I couldn't find any other family member except for the one I was aiming for.

Now their besieging a Frankish town and I'm rushing to take them out before they can horde again even though I'm at war with the Franks.