From Slavery to Freedom: The Untold Story of America’s First Muslims.Yarrow Mamout, natively known as Mamadou Yarrow, was a Guinean freedman, entrepreneur, and property owner in Georgetown, Washington, D.C. An educated Fulani Muslim, he gained his freedom in 1796 after 44 years held in bondage From Slavery to Freedom: The Untold Story of America’s First Muslims.