He has two sons. But from what I've heard, it got messy. Finally they were able to sell the team, which is the best thing to do.
The NFL probably has a strict rule about estate planning for owners to avoid what happened to the Chicago Bears and especially the Miami Dolphins
In the case of the Dolphins, Joe Robbie died without any estate planning and the family had to sell the team at a huge discount in order to pay the massive estate taxes
When George Halas died the bears went through a divisive ownership battle
The Cowboys could be a really big problem if another child emerges and Jerry Jones dies, he’s currently around 80-years old