Catharine Merrill was an American educator, writer, and American Civil War nurse from Indiana who became the second female university professor in the United States. She is best remembered as a talented educator and admired for her modesty and kindness. In 1869 Merrill accepted the appointment as the first Demia Butler Chair of English Literature at North Western Christian University, now known as Butler University, and began her fourteen-year career as a university professor during the 1869–70 academic year. Merrill resigned the professorship in 1883, but continued to offer private instruction at her home until shortly before her death. In addition to becoming a teacher, Merrill was a published author, although it was not her primary goal. Articles describing her travels in Europe from 1859 to 1861 were published in Indiana newspapers. She also anonymously wrote The Soldier of Indiana in the War for the Union. The Man Shakespeare and Other Essays (1902) was published posthumously. Merrill is buried at Crown Hill Cemetery in Indianapolis.

Butler University is a private university in Indianapolis, Indiana. Founded in 1855 and named after founder Ovid Butler, the university has over 60 major academic fields of study in six colleges: the Lacy School of Business, College of Communication, College of Education, College of Liberal Arts and Sciences, College of Pharmacy and Health Sciences, and Jordan College of the Arts. Its 295-acre (119 ha) campus is approximately five miles (8.0 km) from downtown Indianapolis.