When Arnold Friedrich Niederbrach was born on 19 December 1909, in Perry, Illinois, United States, his father, Heinrich Wilhelm Niederbrach, was 41 and his mother, Sophia Louise Blaas, was 27. He married Freda Jewell Heiman about 1927, in Illinois, United States. They were the parents of at least 1 daughter. He lived in Independence, Arkansas, United States in 1935 and Bethesda, Independence, Arkansas, United States in 1940. He died on 3 June 1971, in Cushman, Independence, Arkansas, United States, at the age of 61, and was buried in Batesville, Independence, Arkansas, United States.