When Marion Louise Trefethen was born on 13 September 1907, in Saugus, Essex, Massachusetts, United States, her father, Ernest Milton Trefethen, was 25 and her mother, Olive Louise Ellis, was 23. She married Herbert Stanley Keating on 19 July 1928, in Onondaga, New York, United States. They were the parents of at least 2 daughters. She lived in Cranford, Union, New Jersey, United States in 1930 and Arcadia, DeSoto, Florida, United States in 1998. She died on 11 January 1998, in Madison, Ohio, United States, at the age of 90.