Quote Originally Posted by Bootsiuv
I think a type four gov is helpful in these situations, although remember to remove your other generals, or they'll get a bad trait which lowers public order....

Type four governors do take an enormous amount of upkeep though IIRC.
Type four governments will rarely help in that kind of situation. They increase the population growth rate, which will further lower the public order. And initially, the client ruler will not have much influence, so he will not be as good as most FMs at keeping up the public order.