Dunn Lampton was born in Mississippi in 1950. Lampton was appointed United States Attorney for the Southern District of Mississippi by George W. Bush on September 7, 2001. Earlier, he had served in the same army division as Thomas Moore as a Colonel.
Lampton was instrumental in getting the Dee and Moore case reopened and successfully prosecuting James Ford Seale.
In June 2007 — mere days after the Seale verdict was handed down — Lampton was in a Jeep accident at his muscadine grape farm, which left him partially paralyzed with a severely bruised spinal cord. Lampton never fully healed from this injury. In 2009, it forced him into retirement, and on August 17, 2011, Dunn Lampton passed away. He was just 60 years old.