Most famous for her influential "Adaptation Model of Nursing," this writer, university professor, and trained nurse received the American Academy of Nursing's "Living Legend" designation in 2007.
After earning a nursing degree from Mount St. Mary's College, she received a doctorate in sociology from the University of California, Los Angeles and subsequently became a neuroscience fellow at the University of California, San Francisco.
She taught for many years at Boston College's William F. Connell School of Nursing and, in the early 1990s, founded an organization known first as BBARNS (the Boston Based Adaptation Research in Nursing Society) and later as the Roy Adaptation Association.
After joining a Roman Catholic organization called the Sisters of St. Joseph of Carondelet, she became known as Sister Callista Roy.
She and the famous 19th-century social reformer Florence Nightingale both made major contributions to the field of nursing.