David was born in 1954 in Suffolk, Virginia, an area rich in historic and haunted landmarks. His family originally settled in the Nansemond County area from England in 1735. The Rountree family became one of the prominent families in Southeastern Virginia until 1864, when they lost nearly everything they owned as a result of the Civil War. He moved to Delray Beach, Florida, in the fall of 1963, where he first became interested in the paranormal. In 1965, his next door next door neighbor, Fred Grosstuck, a retired professor from Joliet University and pattern maker, gave him a book called "Adventures in the Paranormal", essentially a collection of short stories of events from all over the world that were scientifically unexplainable. Fred also introduced him to Fate magazine. He participated in the exploration of his first "haunted house" at the age of 17 in Boynton Beach, Florida. He received his B.S.E.E. in 1973 while serving in the Air Force, in microwave technology. He was certified as a paranormal investigator in 1976 at the Rhine Research Center at Duke University, and is currently a supporting member. In 1978 he was certified as an audio engineer.