If my child's father is named in a wrongful death suit does he have to name his heirs?

My child's father owns a business. His equipment caused a death of a customer and he is now named in a wrongful death suit that is moving forward. He said he has to name his heirs. Is it true he has to name his heirs? Would this make his children responsible if he died? Personally, I believe he's lying about the whole thing. He doesn't want anyone to know about our child so I feel this is a tactic to scare me off. He said he is perjuring himself by protecting our child by not naming her as his heir. He tried telling me before he has personal guarantees that extend to his children and children's children. (I know that's false) I'm just trying to sort out anything I need to be concerned about for my child's sake in the future when it comes to his debts. Thank you.