Anna Ecklund was a young woman from Wisconsin who became widely known in the early 20th century due to her alleged possession and subsequent exorcism. Born in 1882, she reportedly exhibited strange behaviors and symptoms that her family attributed to demonic influence. In 1912, after several failed attempts to help her, Catholic priests conducted a series of exorcisms on Anna, which were documented and gained significant attention. Her case is often cited in discussions about possession and exorcism within the Catholic Church, and it has influenced popular culture, including films and literature.