When Wilhelmine Louisa Charlotte Fechtler was born in August 1854, in Beaufort, Franklin, Missouri, United States, her father, Peter Heinrich Fechtler, was 36 and her mother, Marie Agnese Kampschmidt, was 40. She married George Frederick Duerr on 23 February 1873. They were the parents of at least 4 sons and 5 daughters. She lived in Boone, Franklin, Missouri, United States for about 40 years. She died on 5 January 1944, in Boone Township, Franklin, Missouri, United States, at the age of 89, and was buried in Leslie, Franklin, Missouri, United States.