Ashley Davis Prendergast and Michael Charles Holtzhower, both of Chattanooga, Tenn., plan to be married at 6:30 p.m., June 19, 2010 at The Carnegie Hotel, Johnson City. The bride-elect is the daughter of Bob and Carolyn Prendergast of Kingsport, and the granddaughter of Betty Quimby of Johnson City; Cliff Quimby of Mooresville, N.C.; the late Nancy Paty Prendergast and the late William D. Prendergast. She graduated from Sullivan South High School in 2002. She received a bachelor's degree in English from East Tennessee State University and master's degree in secondary education from Milligan College. She is a member of St. Christopher's Episcopal Church and is a teacher at Northwest Whitfield High School, Tunnel Hill, Ga. The bridegroom-to-be is the grandson of Joyce Garland of Jonesborough, the late Arthur Garland, the late Edna Holtzhower Roberts, the late Arbalee Holtzhower, and the late Charles Roberts. He graduated from Soddy Daisy High School in 2002. He received a bachelor's degree in business administration and marketing from East Tennessee State University. He is a member of the United Church of God. He is employed in sales and service at Southeast Diesel Inc., Chattanooga.