One thing I have found is that a good court physician have a huge impact on survivability, so most of my close relatives have survived due to having a good physician, but my vassasls seem to struggle quite a bit, and I have also had a fair share of vassal child rulers (it might have more to do with starting in Charlemagne start where few have had the time to breed decently sized families though)
Anyway, I wonder if the amount of people in court (and whether they have diseases) impact how often people become sick? I have a tendency to invite loads of random well-educated, well-bred, filty rich, dwarfs and other funny people to my court.
Anyway, I wonder if the amount of people in court (and whether they have diseases) impact how often people become sick? I have a tendency to invite loads of random well-educated, well-bred, filty rich, dwarfs and other funny people to my court.