b. 9 July 1907, d. 16 December 1979
| Birth | 9 July 1907 | August D. Gumper was born on 9 July 1907 in Missouri. |
| Cen-Head
(Enumerated with) | 27 April 1910 | The 1910 US Census listed August D. Gumper in addition to Emma Sewing, Louis Gumper, Laura Gumper, Elmer H. Gumper and Edwin Remmert in the household of Gottlieb Gumper, in Roark Township, Gasconade County, Missouri. |
| Cen-Enum | 27 April 1910 | August D. Gumper was enumerated as August Gumper. Single white male, age 3. Son of head of household. He was born in Missouri. His father was born in Germany, his mother in Missouri. He has no occupation. He did not attend school. |
| Cen-Head
(Enumerated with) | 12 January 1920 | The 1920 US Census listed August D. Gumper in addition to Emma Scheible, Louis Gumper, Laura Gumper, Elmer H. Gumper, Emma B Gumper and Edwin Remmert in the household of Gottlieb Gumper, in Roark Township, Gasconade County, Missouri. |
| Cen-Enum | 12 January 1920 | August D. Gumper was enumerated as August D. Gumper. Single white male, age 12. Son of head of household. He did attend school within the census year. He can read and write. He was born in Missouri. His mother and father were born in Missouri. He can speak English. He has no occupation. |
| Cen-Head
(Enumerated with) | 23 April 1930 | The 1930 US Census listed August D. Gumper in addition to Laura C. Waldecker in the household of Henry Waldecker, in Boulware Township, Gasconade County, Missouri. |
| Cen-Enum | 23 April 1930 | August D. Gumper was enumerated as August Gumper. Single white male, age 22. Lodger of head of household. He did not attend school . He can read and write. He was born in Missouri. His father was born in Germany, his mother was born in Missouri. He can speak English. His occupation is salesman in a retail general store. He is an employee. He worked the last working day. He is not a veteran of the U.S. military. |
| Marriage | 21 June 1934 | He and Laura C. Waldecker, daughter of Henry Waldecker and Rebecca Linnemann, were married on 21 June 1934. |
| Death | 16 December 1979 | August D. Gumper died on 16 December 1979 at age 72. |
| Burial | | He was buried in Zion UCC, Boulware, Gasconade County, Missouri. |