Cornelia Marvin was born on December 26, 1873 in Monticello, Iowa to Charles Elwell Marvin and Cornelia Marvin as the second of five children. After attending high school in St. Paul, Minnesota, Pierce's family moved to Tacoma, Washington in 1891 where she finished her secondary education. Shortly after her mother's death, Pierce decided to set out on her own and moved to Chicago in 1893 to work as a "mother's helper" for a Mrs. Porter. When Pierce first arrived in Chicago, she began taking extension courses in areas such as French history and ancient drama from the University of Chicago. By 1894, she had convinced her father to provide the $500 necessary for her to attend the Library School at the Armour Institute of Technology, which later became the University of Illinois in Urbana.
Library career
Following her first year in library school, Pierce began working as both an assistant at the Armour Institute and as an instructor for reference and bibliography. Two years later, she accepted a position as Librarian at the Scoville Institute of Oak Park, Illinois. It was during this time that Pierce also filled the position as the Director of the Wisconsin Library Commission Summer School of Library Training. In 1899 Pierce accepted her last position in the Midwest region, working as a full-time instructor at the Wisconsin Library Commission. In 1905, Pierce moved to Salem, Oregon to serve as the Secretary of the newly-formed Oregon Library Commission. Later in life, Pierce reflected: Pierce remained active in the library profession over the next couple of decades, participating in the Pacific Northwest Library Association. In 1913, she was appointed as the Oregon State Librarian, a role that she filled until 1928 when she married former Oregon governor Walter M. Pierce. The couple had dated for several years, but had not immediately married as it would have required Pierce to resign from her position as State Librarian.
Political career
In 1932, Pierce considered a run for U.S. Congress, representing the second district of Oregon as the Republican candidate. Meanwhile Pierce's husband was also contemplating his own run on the Democratic ticket. Ultimately Pierce decided to support her husband for Congress and served as both his adviser and speechwriter during the campaign. Cornelia Marvin Pierce remained an important force behind the scenes, working as Walter M. Pierce's private secretary during his 10 years of Congressional service while also serving on the Oregon State Board of Higher Education from 1931-1935. After Walter M. Pierce's election loss in 1942, the couple retired to a farm in Salem, Oregon. Cornelia Marvin Pierce died on February 12, 1957 in a hospital in Salem after a "long illness." Pierce was remembered for her work in extending the state library system in Oregon, as well as for her role on the Wisconsin Library Commission earlier in her career.