When Martin Henry Feddersen was born on 18 October 1881, in Pinckneyville, Perry, Illinois, United States, his father, Ingwer Paul Feddersen, was 33 and his mother, Caroline Sophia Roemhild, was 21. He married Katherine Wildermuth on 22 October 1907, in Perry, Illinois, United States. They were the parents of at least 3 sons and 2 daughters. He lived in Cutler, Perry, Illinois, United States in 1910 and Havillah, Okanogan, Washington, United States for about 10 years. He died on 3 October 1966, in Tonasket, Okanogan, Washington, United States, at the age of 84, and was buried in Havillah, Okanogan, Washington, United States.