Crystal Johnson Dooley of Covington announces the engagement of her daughter Erin Hart to Nathan Herron of Macon, son of Wayne and Jean Herron of Martin.The bride-elect is the granddaughter of Virginia and the late Thomas A. Johnson of Covington and Eileen Chrisope and the late Kelley Sentell of Lawrenceville. She is a graduate of North Georgia Technical College and is employed as a nurse with East Metro OB/GYN Specialists. The future groom is the grandson of Mary and the late J.C. Herron of Toccoa and Grace and the late H.L. Gable of Canon.