On February 27, 1892, I. Hunter Pickens and his wife Annie (Ned) Pickens celebrated the birth of a baby girl. The couple named the child Hattie, and they raised her on the family farm near the community of McMillian, in what was then Pickens County in the Chickasaw Nation.

Hattie grew to adulthood in a changing world during the late nineteenth and early twentieth centuries. Her parents experienced the forced removal of the Chickasaws, as they left their homes in the East. Thus, Hattie and her siblings became the first Pickens generation to be born in the western Chickasaw Nation, in what would become the future state of Oklahoma. In preparation for statehood, the Dawes Commission prepared tribal rolls for the Five Civilized Tribes. The Commission listed Hattie on the roll as fullblood Chickasaw enrollee #2909.

Hattie obtained nearly all of her education on the family farm. Farm chores provided Hattie with a strong work ethic, which she maintained throughout her life. Hattie's formal education consisted of only one day at the Burney Institute, near Lebanon. Instructors at the school required all Indian students to learn and speak English. Hattie refused to speak a language other than her native Chickasaw, and thus, she decided not to return to Burney Institute. Hattie continued to speak Chickasaw, and later in life several linguists visited her as part of their efforts to study the traditional Chickasaw language.

On August 14, 1914, Hattie married Samuel Stout in Tishomingo in Johnson County, Oklahoma. The couple settled on I. Hunter's original homestead near McMillan, and they became lifelong farmers. Before his death, I. Hunter deeded portions of his allotment to his children. Initially, he thought it unwise to give his daughters land. He feared that white farmers might marry his daughters solely to obtain their land. However, he finally changed his mind, and Hattie received a portion of I. Hunter's original allotment. Years later, Hattie proved to be the only child who did not sell her portion of the family land.

Hattie helped her husband Samuel to earn a living off the land. Although diminutive in size, Hattie worked as hard as most men. She often assisted her husband in clearing land and using a cross-cut saw. She also proved to be an excellent marksman with a rifle and provided meat for the dinner table. While young, Hattie learned the skill of using herbs as medicine. Later in life, she became known for her knowledge of healing remedies.

In character, Hattie exemplified the role of the family matriarch. Hattie and Samuel begat nine children, but only five lived to adulthood. When family members visited, Hattie provided supervision and discipline for her grandchildren. Although forceful in personality, she exhibited a great sense of humor and loved to laugh. Hattie's Mormon faith and her giving and helpful nature proved itself as she assisted family members and friends in need.

Hattie Pickens Stout passed away April 11, 1992 in Ardmore at the age of 100. Burial occured in the I. Hunter Pickens Cemetery near McMillian.