"See also Clifford Grey, whose real name was Percival Davis.Percival William Davis, also known as Bill Davis, is an American author, young earth creationist, and intelligent design proponent."@en . "Former professor atHillsborough Community College"@en . . . "Percival William Davis"@en . "Bill Davis"@en . "Davis, Percival"@en . . "Young earth creationist" .