Born in 1943 in Colome, SD, Bob was raised in South Dakota. At age twelve, he began hiring out to neighboring ranchers and farmers, and later worked as a lineman for electric companies.
In 1966, Bob married Donna Armstrong from Gordon, NE. They have one daughter, Denelle, four sons, Stacy, Troy, Cory, and David Dunn, plus fifteen grandchildren, and two great-grandchildren. They always kept horses for the kids and took them to play days and gymkhanas.
Bob and Donna moved to Rushville, NE, in 1969 and bought a hardware store, which they ran for 30 years.