sorry for your loss. my father passed 5 years ago, my mother gave me his guns, I packed em up in the bed of my truck and brought them home. I didnt get stopped though, figured if I did I would just deal with it as it came. I'm not saying you should do the same thing, he gave me a few guns now and then and I brought them home with me, I didnt see any difference. They were legally purchased, given to me, so I brought em home, didnt really think all that much about it, just did it.
5 years ago my father passed away as well. He told me the ones that was okay to sell and the ones he wanted me to keep and I should to wrote it down but thought we would have more time and unfortunately he passed the next day.
At the time we both lived in Illinois and when I moved to Indiana I kept them at my Mom and Dad's and when I got the gun safe finally I packed them up in the car and drove them home. My thought was the same as kan915 "They were legally purchased, given to me, so I brought em home, didn’t really think all that much about it, just did it."