When Kathryn Frances Stein was born on 24 August 1889, in Oregon, United States, her father, Ernest Heinrich Stein, was 25 and her mother, Kathryn Mayer, was 21. She married Bernd Carsten Buck on 1 April 1910, in Vancouver, Clark, Washington, United States. They were the parents of at least 1 son and 1 daughter. She lived in Portland, Multnomah, Oregon, United States for about 30 years. She died on 7 August 1979, in Multnomah, Oregon, United States, at the age of 89.