Ernestine Gilbreth Carey was an American author and speaker, born on March 24, 1910. She was the daughter of Frank B. Gilbreth and Lillian Moller Gilbreth, who were pioneers in the field of time and motion study. Carey is best known for co-authoring the book "Cheaper by the Dozen," which recounts her family's experiences and the unique parenting methods of her father. In addition to her writing, Carey worked as a public speaker and contributed to various publications. She continued to share her family's story and the principles of efficiency and organization throughout her life, leaving a lasting impact on both literature and family dynamics.