Where did German chocolate cake originate?

Information taken from http://en.wikipedia.org/wiki/German_chocolate_cake .

This cake is actually not a traditional German dessert. The original recipe was sent by a homemaker in Dallas in 1957 to a newspaper in Texas. It used Baker's German's Sweet Chocolate, which was created in 1852 by an Englishman named Samuel German for the Baker's chocolate brand. Coconut is also a major baking product of the company. The cake became quite popular and General Foods - which owned Baker's Chocolate at the time - sent the recipe to other newspapers in the country. Sales of the company are said to have increased by as much as 73%. The apostrophe and the "s" were accidentally dropped in subsequent publications, creating the "German Chocolate Cake" we know today. [1]