When Josephine Amelia Hammarquist was born in August 1853, in Wisconsin, United States, her father, Charles G Hammarquist, was 30 and her mother, Josefine Maximiliana Eugenia Reuterskiold, was 23. She married Adam L. Plum from 1879 to 1880. They were the parents of at least 1 son. She lived in Oakland, Jefferson, Wisconsin, United States for about 5 years and Sumner, Jefferson, Wisconsin, United States for about 20 years. She died in 1930, in Jefferson, Wisconsin, United States, at the age of 77, and was buried in Busseyville, Jefferson, Wisconsin, United States.