By Mary Bellis          
Peanut butter was  invented and reinvented many times during history. Peanuts were known as  early as 950 B.C. and originated in South America. The ancient Incas  used peanuts and were known to have made it into a paste-like substance.  As a crop peanuts emigrated from South America to Africa by early  explorers and then traveled by trade into Spain who then traded the  product to the American colonies. The first commercial peanut crop was  grown in Virginia in the early to mid 1840's and in North Carolina  beginning around 1818.
According to the Corn  Products Company, Dr. Ambrose Straub of St. Louis patented a peanut  butter-making machine in 1903 and some unknown doctor invented peanut  butter in  More Here......