Charles Henry Fletcher
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Charles Henry Fletcher (aka Chas. H. Fletcher in company advertising) organized and led the Centaur Company, makers of "Fletcher's Castoria", serving as president and general manager.[1]
Testimonials
He was born December 25, 1837, (according to most records) in New York City, New York.
As a boy of 13, Fletcher went to work for a proprietary medicine company. In 1872 he managed to save enough to buy from a physician, Dr. Samuel Pitcher, the formula of a laxative called Castoria. With this formula, he made a fortune.
Originally marketed as Pitcher's Castoria, the product has had several names, notably Fletcher's own.

A little known fact is that he was sent south before the Civil War to collect debts by Demas Barnes. He returned (successfully) just before Fort Sumter was attacked (so shortly before April 12, 1861, he returned north). Partly due to this success (and others both before and after), Barnes backed him in forming the Centaur Company.
"[The Centaur Company is] probably the largest proprietary medicine concern in the country, if not in the world. Mr. Fletcher's name has become so identified with the product of the company that it is known all over the civilized world."[1]
"Charles H. Fletcher['s] ... signature is perhaps better known than that of any other man of his day. ... The [Centaur] company's advertising is said to have created a new epoch in advertising, and among the famous slogans which made it world-known was 'Babies cry for it',"[2]