Diane Hartley, a Williamson County native and a product of Williamson County Schools, is one of a handful of  WGES staff members who have been at Walnut Grove since it opened. She taught at Grassland Elementary before coming to Walnut Grove. She and her husband have two adult sons, and are now proud grandparents of Addison Nicole born March 23, 2008. Mrs. Hartley spends her free time gardening, boating, and antiquing.