Here is another bio on Oprah read between the lines : http://gale.cengage.com/free_resources/bhm/bio/winfrey_o.htm
Her unmarried parents, Vernon Winfrey and Vernita Lee, separated soon after she was born, leaving her to be <b>raised by her maternal grandmother</b>. "She certainly wasn't an educated woman, but she taught me the shape of letters, and she taught me my Bible stories," Winfrey recalled in Life magazine. By the time she was six, Winfrey had moved to Milwaukee to live with her mother.
Winfrey said her father saved her life. <b>He was very strict and provided her with guidance, structure, rules, and books. He required his daughter to complete weekly book reports, and she went without dinner until she learned five new vocabulary words each day.</b> She joined her school's drama club and became a prize-winning orator, winning a $1,000 college scholarship after delivering a short speech entitled "The Negro, the Constitution, and the United States" to 10,000 Elks Club members in Philadelphia.