The great-grandsons of the women who portrayed Aunt Jemima in ads for the pancake mix are suing owner Quaker Oats and, therefore, PepsiCo for royalties in federal court in Chicago. Nancy Green, who was born a slave, was the first Aunt Jemima in 1890. The lawsuit claims Green's heirs as well as the descendants of other black women who appeared as Aunt Jemima deserve $2 billion and a share of future revenue. They also say Green helped formulate the recipe.