When Margaretha Rosen was born on 27 May 1882, in Niederstocken, Bern, Switzerland, her father, John Gottlieb Rosen, was 24 and her mother, Magaretha Stegman, was 18. She married Ernest Nicklaus Egli on 19 September 1900. They were the parents of at least 3 sons and 6 daughters. She lived in Lanark, Bear Lake, Idaho, United States in 1920 and Lanark Election Precinct, Bear Lake, Idaho, United States in 1940. She died on 8 May 1953, in Montpelier, Bear Lake, Idaho, United States, at the age of 70, and was buried in Montpelier, Bear Lake, Idaho, United States.