I knew a subject called John Harvey Matherly, in Florida, born in March 1942, who claimed to be an Engineer, and an Army Vietnam Veteran. He had 3 children named Brent, Kirk and Brooke, had been married 23 years, divorced in 1985. His son Brent lived in Alabama, his son Kirk in Germany and daughter in Daytona Beach with mother. He once operated a company called "The Enfield Corporation" and his ex-wife's name was Barbara Underwood.
He said he was born in Virginia but raised in Havre de Grace, Maryland.
If you need more details, please write me. I don't know where he is now, though.