If you also hold a councilor position, you can't be fired from it.So,
I'm a duke and just became the regent of the kingdom, what perks do I have?
The king of france in my current game didn't have a counsilor all the time he was alive because he offered me this position after throwing me in prison. It was a fabrication from a pathetic relative and the king believed his word over mine apparently...I paid the 145 gold to get released and the stupid AI king offered me the same position and i declined the first 3 times untill i just ignored his request completely. He continued to offer me the counsilor seat for 30+ years on a regular basis.