Parents, children and alduterous obsession in The White Devil

1) I'm wondering what role parent/child relationships play in The White Devil. We see Cornella attempt to chastise Flamineo and Vittoria for their behavior and we see a playful Bacciano with his son Giovanni - perhaps the two most "parental" moments of the play. If, as Monticelso suggests in II.i.106, parents should be children's "patterns" of virtue, then what do we make of the disparate personalities of parents and children that we see in these pairs? While this seesm to be some of the only sound advice in a play full of treachery from most every angle, it seems not to ring true or have any positive effect.

2) Echoing Tim's reference to Marlowe's Edward II, I wonder how we can relate Bracciano's adulterous obsession with Vittoria to the moral degradation of Rome in general (a stand-in - I'm assuming - for London as well). Why exactly is everyone so concerned? Why does such an obsession hurt the state? Does it have political ramifications that Webster would like his audience to consider?