When Anna Klossner was born on 11 July 1848, in Diemtigen, Bern, Switzerland, her father, Christian Klossner, was 40 and her mother, Susanna Catharina Knutti, was 44. She married Oswald Baumgartner Jr on 4 June 1865, in Concord, Dodge, Minnesota, United States. They were the parents of at least 1 daughter. She lived in Concord Township, Dodge, Minnesota, United States in 1900 and West Concord, Dodge, Minnesota, United States in 1920. She died on 9 March 1925, in Concord, Dodge, Minnesota, United States, at the age of 76, and was buried in Berne, Dodge, Minnesota, United States.