William Addington Martindale (1814-1873) was a Mormon farmer, pioneer to Utah, and missionary throughout the United States.

William Addington Martindale was born June 11, 1814 in Washington, Wayne County, Indiana to James Martindale and Elizabeth Addington. In 1833 William married Mahalia Stigleman and together they had 2 children: William Clinton Martindale and Martha Jane Martindale. On January 20, 1840 William and baptized a member of The Church of Jesus Christ of Latter-day Saints. Mahalia could not accept William's new faith which led to the couples divorce later that same year and the marriage of William to his new wife, Elizabeth Bunnell. William had moved to Nauvoo with the saints, but just a few years later was forced to move with the persecuted saints to Winter Quarters. William was then called to serve a mission, the first of many he would serve in his lifetime. Those missions brought Elder Martindale to the people of Indiana, Ohio, Texas and others of the southern states. As a result of these missions, William crossed the plains as a pioneer several times. He began to practice polygamy and married Rebecca Haines, Isobel Pratt and Kindness Ann Haines Badger.

Eventually William Addington Martindale took his family and settled in Duncan's Retreat in southern Utah where he passed away on February 14, 1873.

William Clinton Martindale (1834-1911) was a Mormon pioneer, rancher and community leader in the settlement of the West.

On July 10, 1834 in Greensfork, Wayne County, Indiana, William Clinton Martindale was born into the home of William Addington Martindale and Mahalia Stigleman. Just 6 years later, his parents were divorced as a result of his father's conversion to The Church of Jesus Christ of Latter-day Saints and his mother's refusal to accept that belief. In 1852, William Clinton, often referred to as just Clinton, pioneered west with his father and was sent to settle Grantsville, Tooele County, Utah. He established himself as a reputable rancher in the area and cared well for his family's property as his father served many missions. Known well for his musical talent, William Clinton became the first choir director in the county. On May 5, 1854 he married Matilda Jane McMurray of Pennsylvania and together they had 12 children.

After 24 years in Grantsville, William moved his family to Goose Creek, Cassia County, Idaho which was later renamed Oakley. One of his daughters resided in Goose Creek and, in writing, spoke of the beauty to her father. In 1879 William came to see for himself and upon arriving envisioned a future for the land. Due to his report and encouragement, a branch was established in Goose Creek the following year and William Clinton Martindale was called to be its President. In addition to ranching there, he allowed school and church to be held on his very property and even served a term as a representative to the Terr0itorial Legislature of Idaho.

William Clinton Martindale practiced polygamy as an obedient member of his church. He was married to Mary Bagley, who would bear to him eight additional children, in addition to a few other women who bore no children. In the 1880s raids of the Latter-day Saints, William Clinton was given 6 months in the territorial penitentiary for his polygamous practices.

On 9 July 1911, William Clinton Martindale died and was buried in Oakley, Cassia, Idaho.