"His manuscripts make no mention to any earthquake in Rome on May 11, 2011," Lagorio said.
A self-taught astronomer and seismologist, Raffaele Bendandi is said to have predicted several quakes, including the one which struck Friuli in 1976, claiming almost 1,000 lives.
"The earthquake prophet," who died in 1979 aged 86 and was even awarded a knighthood by Fascist dictator Benito Mussolini for his research, believed earthquakes can be perfectly predictable as they are the direct result of the combined gravitational pulls of the planets, the moon and the sun.
His popularity started in 1923, when he predicted that an earthquake would strike the central region of the Marches on January 2 the following year.
Indeed, a quake hit the region two days after his prediction, gaining him a front page article in the daily Corriere della Sera titled, "The man who forecasts earthquakes."
"He made more than 100 predictions, and often they were accurate. But there was the problem of the identification of the epicenter. A prediction which is inaccurate by just 10 kilometers (six miles) is considered unreliable, and he often was wrong by hundreds of kilometers," Lagorio told La Repubblica newspaper.