Preston Rose Scott, farmer and state representative, was born in Caddo Parish, Louisiana, in January 1840. He was the son of William Thomas Scott and Mary Washington (Rose) Scott. The Scott family relocated to Texas in June 1840 and settled in Harrison County. Scott’s father was a prominent politician during the late Republic and early statehood period and served in both houses of the Texas legislature and attended the 1845 Texas Constitutional Convention and 1861 Secession Convention. Scott himself was raised in Harrison County and married Mary Taylor there in September 1858. In 1859 he relocated to Atlanta, Cass County, and was listed as a farmer in the 1860 census. Apparently he also engaged in mercantile and sawmill businesses. He later helped organize, and was a president of, the first bank established in Atlanta and was president of the East Texas Transportation County.
On September 12, 1861, following the death of his wife, Scott married Mary Richey. The 1870 census listed in Douglassville in Davis (now Cass) County with his wife and six children (five sons and one daughter), ranging from ages eleven to two. In 1872 he won election as representative for District 8—comprised of Bowie, Davis, and Marion counties—to the House of the Thirteenth Texas Legislature. He was involved in key legislation to pass a measure to grant land to the International and Great Northern Railroad instead of money. Scott, a Democrat, later represented Cass County at the 1875 Texas Constitutional Convention. During this convention he served on the Judiciary Committee and was instrumental in establishing modern judicial districts and appeals courts throughout the state. Scott was listed as a stock farmer living in Hardeman County in the 1900 census. In addition to his wife, two children (born since 1870) were still living in the household. He died on April 18, 1906, and was buried in Scottsville Cemetery in Harrison County.