When Margaret Frances Amann was born on 30 September 1890, in Milwaukee, Milwaukee, Wisconsin, United States, her father, Bernard Amann, was 31 and her mother, Anna Gruendle, was 30. She married Heinrich "Henry" William Simon in Milwaukee, Milwaukee, Wisconsin, United States. They were the parents of at least 1 daughter. She died on 27 April 1966, in Milwaukee, Milwaukee, Wisconsin, United States, at the age of 75, and was buried in Calvary Cemetery And Mausoleum, Milwaukee, Milwaukee, Wisconsin, United States.