When William David Keck was born on 21 August 1867, in Lees Summit, Jackson, Missouri, United States, his father, Henry E Keck, was 23 and his mother, Sarah Elizabeth Cantrell, was 20. He married Jennettie Mahalia “Nettie” Hutchens on 10 November 1889, in Independence, Jackson, Missouri, United States. They were the parents of at least 2 sons and 3 daughters. He lived in Van Buren Township, Jackson, Missouri, United States for about 20 years and Butler Township, St. Clair, Missouri, United States in 1930. He died on 4 March 1951, in Jackson, Missouri, United States, at the age of 83, and was buried in Jackson, Missouri, United States.