Private John Allison Grubb was born on April 1st, 1843 at Quincy, Gadsden County, Florida.
In 1860 he was living near Quincy, Gadsden County, Florida at the residence of his father, Nicholas, along with his mother, 2 brothers and 2 sisters. John enlisted September 21st, 1861 at Pensacola, Escambia County, Florida in Captain Gee’s Company ("old" Company G, 1st Florida Infantry) for a period of 12 months.
He reenlisted in Captain Davidson’s Company on April 24, 1862 at Quincy, Gadsden County, Florida. He was with the company from the date of enlistment until October 28th, 1862 when he was reported sick at Knoxville, Tennessee. He remained at Knoxville, and was assigned as a hospital attendant on January 15th, 1863; a week later, he was assigned as a ward master.
Between November and December, 1863 he was transferred from the Army of Tennessee by Secretary of War Special Order 264/25 dated November 6th, 1863 for service as a Clerk in the Department of Medicine, and assigned to the General Hospital at Quincy, Florida. He was paroled at Quincy on June 15th, 1865.
After the war, John moved to Cincinnati, Ohio, where he joined the Typographical Union, Local 3 ca. 1870. He relocated to Evansville, Indiana ca. 1874. He was employed by the Savannah Press for some 28 years. Private Gatlin applied for and was awarded a Florida Confederate Pension. He was a confirmed bachelor.
He died ca. 1915; his places of death and interment are unknown.
 Both Union and Confederate hospitals employed ward masters. These men, one per ward, were under the supervision of the hospital steward. Ward masters had two main duties; accounting for and safeguarding of patients’ belongings; and to receive, maintain, account for, and replace all hospital furniture, bedding, and cooking utensils for his ward. Confederate ward masters also were responsible for ward cleanliness, and supervision of ward nurses. See Schroeder-Lein, Glenna R. “The Encyclopedia of Civil War Medicine”. Taylor & Francis, 2015. 457 p. ISBN 9781317457091