Margaret Wilson was born in Traer, Iowa, in 1882. She worked as a United Presbyterian missionary in India's Punjab region, where she taught at a girls' school and worked at a hospital, and later taught for five years at West Pullman High School in Chicago after studying at the University of Chicago Divinity School.
Her earlier stories were published under the pen name An Elderly Spinster. In 1923 she won a $2,000 Harper and Brothers prize for The Able McLaughlins, which also won the 1924 Pulitzer Prize. She died in 1973.
Source: Wikipedia