LaVyrle was born on July 17, 1943 in Browerville, Minnesota, USA, where she grew up. Married with her high school sweetheart Dan Spencer, shortly after her graduation, a decision she calls the wisest choice of her life. They had two daughters, Amy and Beth (d. 1990).
LaVyrle worked as a teacher's aide at Osseo Junior High School, when in her thirties, she read Kathleen Woodiwiss's novel "The Flame and Flower", which gave her the idea to become a novelist. She decided to try transferring to paper a recurring dream she was having about a story based on her grandmother's lifestyle on a Minnesota farm. Her story became her first manuscript, "The Fulfillment", and she sent it to Kathleen Woodiwiss. The bestselling author read the novel and promptly mailed it to her own editor at Avon. The editor purchased the novel, which was published in 1979. She was inducted into the Romance Writers of America Hall of Fame in 1988. She wrote 23 sweet historical and contemporany novels. Published around the world, her works had included 12 New York Times Bestsellers, and have been won 4 RITA Awards, 3 Golden Medallion Award and a Minnesota Book Awards. LaVyrle said: "the trademark …