Question: When was the American  former schoolteacher born who is a subject in a true crime book of Gregg Olsen?

Context paragraphs:
Murder on the High Seas (book): Murder on the High Seas – "The True Story of the Joe Cool's Tragic Final Voyage" is a true crime book written by Carol Soret Cope, bestselling author of "In the Fast Lane: A True Story of Murder in Miami" and "Stranger Danger: How to Keep Your Child Safe".  The book explores the investigation into the mysterious murders aboard the Joe Cool.

Murder in Mississippi (book): Murder in Mississippi: The True Story of How I Met a White Supremacist, Befriended His Black Killer and Wrote this Book is a 2013 true crime book written by Australian author and documentary-maker John Safran.  It was published as God'll Cut You Down in the US.  The book won the 2014 Ned Kelly Award for True Crime.

Deaths on Pleasant Street: Deaths on Pleasant Street: The Ghastly Enigma of Colonel Swope and Doctor Hyde (ISBN  ) is a non-fiction book describing the suspicious deaths of three members of the prominent Swope family of Independence Mo.  The deaths took place in the fall and winter of 1909, in the family's 26-room gothic mansion.  Author Giles Fowler presents evidence that at least two of the deaths were murders, committed by Dr. Bennett Clark Hyde, who was married to a Swope heiress.  The first Hyde trial, for the murder of philanthropist Thomas Hunton Swope, was covered by virtually every major newspaper in the United States.  Fowler's book, published by the Truman State University Press, was winner of the Jackson County, MO.  Historical Society's Historic Book of the Year award, in 2009, and a 2009 ForeWord award as True Crime Book of the Year.

The Monster of Florence: A True Story: The Monster of Florence: A True Story is a 2008 true crime book by American thriller writer Douglas Preston and Italian journalist Mario Spezi.  It relates to a series of murders that occurred between 1968 and 1985 and involved couples who were killed while having sex in their cars in deserted lanes around the city of Florence in the Italian region of Tuscany.

Helter Skelter (book): Helter Skelter (1974) is a true crime book by Vincent Bugliosi and Curt Gentry.  Bugliosi had served as the prosecutor in the 1970 trial of Charles Manson.  The book presents his firsthand account of the cases of Manson, Susan Atkins, Patricia Krenwinkel, and other members of the self-described Manson Family.  It is the best-selling true crime book in history.

A Death in White Bear Lake: A Death in White Bear Lake is a true crime book by journalist Barry Siegel, published in 1990.  The book recounts one of the most notorious cases of child abuse ever prosecuted in the United States, the murder of three-year-old Dennis Jurgens by his adopted mother Lois Jurgens.  The case was significant because the murder was committed in 1965, Lois Jurgens was not charged with the crime until 1986.  Lois Jurgens was convicted of murder in the third degree in 1987.

John Gilmore (writer): John "Jonathan" Gilmore (July 5, 1935 - October 13, 2016) was an American author and gonzo journalist known for iconoclastic Hollywood memoirs, true crime literature and hard-boiled fiction.  A motion picture, television and stage actor in Los Angeles and New York in the 1950s, his friends including James Dean and Marilyn Monroe, Gilmore has also written about his encounter with Elizabeth Short a.k.a. "The Black Dahlia" during his youth.  Gilmore emerged as a writer from the Beat Generation in the '60s, influenced by Jack Kerouac and befriended by author William S. Burroughs.  The publication of his true crime book "Severed: The True Story of the Black Dahlia," ushered in a cult following for the author.  His manuscripts and original writings are housed in the special collections department of the Research Library of the University of California at Los Angeles.

Mary Kay Letourneau: Mary Kay Fualaau (née Schmitz, formerly Mary Kay Letourneau; born January 30, 1962) is an American former schoolteacher who pleaded guilty to two counts of felony second-degree rape of a child, her 12-year-old student, Vili Fualaau.  While awaiting sentencing, she gave birth to Fualuaa's child.  Her plea agreement called for six months in jail, with three months suspended, and no contact with Fualaau for life.  The case gained national attention.

In Broad Daylight: In Broad Daylight is a true crime book by award-winning writer Harry N. MacLean, detailing the killing of town bully Ken Rex McElroy in 1981 in Skidmore, Missouri.  The book won an Edgar Award for best true crime writing in 1989, was a "New York Times" bestseller for 12 weeks (charting at number 2) and was adapted into a television movie of the same name.  The book was reissued in 2007 by St. Martin's Press with a new epilogue.

Gregg Olsen: Gregg Olsen (born March 5, 1959 in Seattle, Washington) is a "New York Times", "USA Today" and "The Wall Street Journal" bestselling author of nonfiction books and novels, most of which are crime-related.  The subjects of his true crime books include convicted child rapist and school teacher Mary Kay Letourneau, product tampering killer Stella Nickell, fasting specialist Linda Burfield Hazzard, and former Amishman and convicted murderer Eli Stutzman.

Supporting paragraphs: Gregg Olsen Mary Kay Letourneau
Answer: January 30, 1962