Education
Lewis was born in Chicago, Illinois, and was a graduate of the University of Chicago, where she was a member of a literary circle that included Glenway Wescott, Elizabeth Madox Roberts, and her future husband Yvor Winters. She was an active member of the University of Chicago Poetry Club.
Career
She taught at both Stanford University in California, and the University of California at Berkeley.
She wrote The Wife of Martin Guerre (1941) which is the tale of one man's deception and another’s cowardice. Her first novel was The Invasion: A Narrative of Events Concerning the Johnson Family of St. Mary's (1932). Other prose works include The Trial of Soren Qvist (1947), The Ghost of Monsieur Scarron (1959), and the volume of short fiction, Good-bye, Son, and Other Stories (1946).
Lewis was also a poet, and concentrated on imagery, rhythms, and lyricism to achieve her goal. Among her works are The Indians in the Woods (1922), and the later collections Poems, 1924-1944 (1950), and Poems Old and New, 1918-1978 (1981). She also collaborated with Alva Henderson, a composer for whom she wrote three libretti and several song texts.