Yusuf Estes (born: Joseph Estes, 1944), is an American Islamic preacher and chaplain from Texas. [2] Estes converted from Christianity to Islam in 1991. He has served as a Muslim chaplain for the United States Bureau of Prisons during the 1990s, and has served as a delegate to the United Nations World Peace Conference for Religious Leaders held 7. 8. 9. K. Share. Save. 331K views 10 years ago. Yusuf Estes the American Ex-Preacher tell his full story of how he and his whole family (& his father which was a preacher too) converted to QKVuSM.