The generally accepted answer is that it was named for President Grover Cleveland's daughter, Ruth. It was probably not, despite what people often suggest, named after Babe Ruth. ---- IN FACT:
1Although the name of the candy bar sounds nearly identical to the name of the famous baseball player Babe Ruth, the Curtiss Candy Company has traditionally claimed that it was named after President Grover Cleveland's daughter, Ruth Cleveland. Nonetheless, the bar first appeared in 1920, as Babe Ruth's fame was on the rise and long after Cleveland had left the White House and 16 years after his daughter had died. Moreover, the company had failed to negotiate an endorsement deal with Ruth, and many saw the company's story about the origin of the name of the bar as merely a way to avoid having to pay the baseball player any royalties. Ironically, Curtiss successfully shut down a rival bar that was approved by, and named for, Ruth, on the grounds that the names were too similar in the case of George H. Ruth Candy Co. v. Curtiss Candy Co, 49 F.2d 1033 (1931). 1Wikipedia: The Free Encyclopedia, Baby Ruth, 2008 retrieved from http://www.wikipedia.com August 2008.
My sincerest apologies to all for not citing my source, I do not go in for Plagiarism, but apparently I did so with out realizing I had forgotten to cite my source. Again I apologize for the error on my part. Citing sources is a good way of giving out information, but don't do like I did and forget to site the source. Although Wikipedia is an encyclopedia that is edited by average people and many different people contribute to the site, the source of any information should still be Cited, even though the author's are various at least site the website.