Dr. Liebeault (1823-1904) is the founder of famous Nancy School and the father of modern hypnotherapy.

Nancy school held that hypnosis was a normal phenomenon induced by suggestion, in contrast to old schools, which considered the hypnotic trance is manifestations of magnetism, hysteria or psycho-physiological phenomenon.

Ambroise-Auguste Liebeault was born in Favieres, a small town in the Lorraine region of France, on September 16, 1823.

He completed his medical degree in 1850 at the age of 26. He then established a practice in the village of Pont-Saint-Vincent, near Nancy.

His first book Induced Sleep and Analogous States considered mostly from the Viewpoint of the Action of the Mind on the Body was published in 1866.

Later his institution was converted as Nancy School with the collaboration of Dr. Hippolyte Bernheim, a renowned professor at the Medical School in Nancy.

Abbe Faria (http://en.wikipedia.org/wiki/Abb%E9_Faria) was the forerunner and Dr. Sigmund Freud and Emile Coue(http://en.wikipedia.org/wiki/Emile_Coue) both are the disciplines of Dr. Liebeault.

He died in 18th February 1904 at the age of 80.

Ref:http://www.durbinhypnosis.com/liebeault.htm