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Before the War[edit | edit source]
Private life[edit | edit source]
He married Mary Ann Lamar in July 1861.
War Service[edit | edit source]
Killingsworth was mustered into Company G, th Mississippi Volunteer Infantry Regiment, elected Captain on August 3, 1861. He was elected major of the Regiment on November 16, Lieutenant-Colonel January 18, 1862, and finally to Colonel, May 10, 1862.
Death[edit | edit source]
Killingsworth was mortally wounded at Crampton's Gap, and died the following day in Burkittsville, Maryland. He is interred in the family plot, in Fayette County, Alabama.
He was succeeded by LTCOL Buford in command of the Regiment.