Actually, I believe the original Invisible Man (from the H. G. Wells novel) was named Jack Griffin. The Invisible Man in the League of Extraordinary Gentlemen comic series is supposed to be the son of the original Invisible Man, since Jack Griffin was killed in the original novel. So yes, Alan Moore made up the first name Hawley, but for a different reason.I vaguely remember reading in an interview that Alan Moore made up the Invisible Man's first name (since Mr. Wells never gave him one), but kept the same last name.
Actually, I believe the original Invisible Man (from the H. G. Wells novel) was named Jack Griffin. The Invisible Man in the League of Extraordinary Gentlemen comic series is supposed to be the son of the original Invisible Man, since Jack Griffin was killed in the original novel. So yes, Alan Moore made up the first name Hawley, but for a different reason.
In The Invisible Man the title character is only referred to as "Doctor Griffin;" Moore has said that he gave the Invisible Man the first name of "Hawley" as a reference to the murderer "Dr. Hawley Crippen." Crippen poisoned his wife in 1910 and was one of the most notorious of England's pre-WW1 murderers.