The thread title made me think his family was opening a new restaurant.
If there was actually a restaurant owned by the Payton family, I'd have to go to it during a trip up to Chicago.
Walter Payton's Round House
The Walter Payton roundhouse is now gone. Two Brother's Brewery opened their restaurant there now... much better beer.
Walter owned or co-owned 10 nightclubs in Chicago when he was alive. I think they're all gone now.