Male 3/24/1966 McCook, NE

Hello, Do you have any info on BM? Im searching for my grandmothers son. She gave him up before my mother was born. Supposedly her parents forced her. She died in 74, but no one really knows of her children because her parents never accepted them. She lived in Culbertson. If any of this sounds familiar please message me back. Have you DNA tested?Thx for your time.