M. A. Orr

Mary Acworth Orr (1867–1949), later Mrs. John Evershed, was an English astronomer and historian of astronomy. As a young woman in Australia she observed variable stars and wrote An Easy Guide to Southern Stars. In 1906 she married the solar astronomer John Evershed and went with him to the Kodaikanal Observatory in southern India, where she studied solar prominences and wrote Dante and the Early Astronomers (1913). After their return to England she directed the historical section of the British Astronomical Association and compiled a survey of lunar nomenclature.