Premise: Kinsey Millhone is a fictional character who was created by Sue Grafton for her "alphabet mysteries" series of novels. Millhone appears in a number of short stories written by Grafton. Grafton's mystery novels featuring Millhone are set in 1980s Santa Teresa, a fictionalized town based on Santa Barbara, California.
Hypothesis: The character, Kinsey Millhone, must have been born prior to 1990