1099-MISC from my deceased brothers business

My brother died in 2002. He sold life insurance for a living. After his death his estate was receiving a large amount of money every month that was earmarked for his children and his mother (my mother also) was in charge of distributing the money to his children. Our mother died in 2006 and I took over the distribution of the money until they reached adulthood.The children are now adults and the money no longer goes to them and was supposed to stop. The money has still come in but the children don't want it (it only amounted to 1,200 last year). I was told that I should keep it for the past management of the funds. I have reported it on my taxes but when I run a check Turbo Tax says I need info from my (deceased) brother schedule C. He has been dead for 20 years now, what do I do?