The Real McCoy. Elijah McCoy was born in 1844 to parents who fled from slavery in Kentucky, via the Underground Railroad. At age 15, he traveled to Edinburgh in Scotland for an apprenticeship, and returned as a mechanical engineer. McCoy's invention allowed trains to run faster and longer without stopping for maintenance. The invention was so good, it was referred to as "the real McCoy," in order to differentiate it from other pale imitations that popped up on the market.
The folk speech of Appalachia, instead of being called corrupt, ought to be classified as archaic. Many of the expressions heard throughout the region today can be found in the centuries-old works of some of the greatest English authors: Alfred, Chaucer, Shakespeare, and the men who contributed to the King James version of the Bible, to cite but a few.