When Walter Owen Loomis was born on 10 August 1923, in Topeka, Shawnee, Kansas, United States, his father, George Walter Loomis, was 42 and his mother, Emily Clark, was 30. He lived in California, United States in 1935 and Fullerton Judicial Township, Orange, California, United States in 1940. He died on 29 May 1989, in San Diego, California, United States, at the age of 65, and was buried in Riverside National Cemetery, Riverside, Riverside, California, United States.