Hinche Parham Mabry, soldier and jurist, was born at Laurel Hill, Carroll County, Georgia, on October 27, 1829, one of six children of Hinche Parham and Linnie (Williams) Mabry. He attended the University of Tennessee and, after moving to Jefferson, Texas, at the age of twenty-one, read law until he was admitted to the bar in 1856. In 1854 he married Sarah Abigail Haywood, and the couple had three children, including Woodford H. Mabry. By 1860 Mabry was a successful and prosperous lawyer and had served two terms as a state legislator. Though initially opposed to secession, he joined the volunteer expedition that seized the federal forts in Indian Territory in May 1861. When Col. Elkanah B. Greer organized the Third Texas Cavalry a month later, Mabry became captain of Company G and quickly established a reputation for audacity, courage, and strict discipline. On one occasion he fought his way out of an apparently hopeless ambush almost single-handedly. He was promoted to colonel in July 1862 and became the commander of his regiment. He was severely wounded and captured the following fall. Refusing to sign a parole that read “so called Confederate States,” he remained a prisoner until 1863 when he was exchanged. He rejoined his regiment in the spring of 1863, held temporary command of Lawrence Sullivan Ross's Texas Cavalry Brigade from October to December 1863, and then led another brigade composed of a number of under-strength Arkansas and Mississippi units from March 1864 to February 1865. He molded this unpromising material into an effective force.
His men captured a federal gunboat on the Yazoo River in April 1864 and gave a good account of themselves in Gen. Nathan Bedford Forrest's cavalry campaigns in northern Mississippi and West Tennessee during the summer and fall. After his brigade was broken up in February 1865 Mabry was reassigned to duty west of the Mississippi. He signed his parole at Shreveport on June 22, 1865. At least one contemporary source indicates that Mabry was commissioned brigadier general in 1865. He later served in the Constitutional Convention of 1866 and was elected to preside over the Eighth Judicial District. Federal military authorities replaced him a year later, however. Mabry continued to practice law in Jefferson until 1879, when he moved to Fort Worth. He died at Sherman on March 21, 1884, and was buried in Oakwood Cemetery at Jefferson.