I have recently started a game with the Duchy of Connacht, and have pressed my claim on the County of Breifne. All went well, and I now have two provinces under my control.
Now, a few years later, I noticed that the Bishopric of Tuam (the religious holding in my own province), which used to be my vassal is no longer : I did not get any message telling me when or why. I looked at the new liege, and it turns out the bishop is now a vassal of my vassal, the count of Breifne : as a result, my character hates that guy for stealing the bishopric, and I have no idea how to get it back.
How can I get control of the Bishopric, and/or ask my vassal to transfer it back to me?
Thanks in advance