Who is Henry Galt?

Who is Henry Galt?
John Galt is the main character in "The Driver" by Garet Garrett. Garrett was an Old Right critic of The New Deal. The book is the story of an upstart Wall Street speculator financier, Henry Galt, a shadowy figure who stays out of the limelight as much as possible until he unleashes a plan that had been years in the making: he uses his extraordinary entrepreneurial talent to acquire control of a failing railroad.