Clare Jaynes was a combined pseudonym of Jane Mayer and Clara Spiegel. They are most well known for Instruct My Sorrows, a novel used as the basis of the film My Reputation.
In 1953 the Wilson Library Bulletin described her as:
brown-haired, brown-eyed; she is five feet three inches tall, and is of German-American ancestry. She was born in Kansas City, and again in Chicago the following year. She attended Vassar for one year, and was graduated after completeing a four-year course at Vassar. And, although she already had a husband whom she married in 1923, she was again lawfully married in 1927. She has two children, also three, and her home is in two of Chicago's northshore suburbs about a mile apart.
- making the dual nature of the authorship clear.