Zachary Thomson Scott, physician, son of Lewis and Abby (Boyle) Scott, was born on December 25, 1880, at Fort Worth, Texas. He graduated from the University of Texas Medical School at Galveston in 1903. While a medical student residing in St. Mary's Hospital he was responsible for rescuing scores of patients trapped by the rising waters produced by the Galveston hurricane of 1900. After graduation he began his practice in Clifton, Bosque County. In 1909 he moved to Austin, where with Thomas J. Bennett he established the Austin Sanitarium and developed a lifelong interest in the Texas Tuberculosis Association. He instituted the sale of tuberculosis seals in Texas. During World War I Scott served as a lieutenant commander in the navy and was in charge of a unit at the naval hospital in Gulfport, Mississippi. After the war Scott and Frank C. Gregg established the Scott-Gregg Clinic in Austin in 1923. Scott retired from his practice in 1947 and began breeding cattle on a farm near Buda; he crossed Santa Gertrude with Herefords for a new breed he called San Gerfords. Scott married Sallie Lee Masterson on June 2, 1909; they were the parents of two daughters and a son, Zachary Thomson Scott, Jr., who became a well-known actor. Scott died in Austin on January 19, 1964, and was buried in Austin Memorial Park.