Madren-DobyMr. and Mrs. Bobby Eugene Ma-dren of Rumley Road, Graham, announce the engagement of their daughter, Tina Arlene Madren, to Mark William Doby, son of Mr. and Mrs. Troy Lee Doby Jr. of Whitsett.The wedding is Sept. 20, 1997, at 2 p.m. at Holly Hill Baptist Church, Burlington.The bride-elect graduated from Southern Alamance High School and Alamance Community College, with a degree in dental assisting II. She is a dental member service representative with Aetna / U.S. Health- Tina Madrencare, Greensboro. Mark DobyThe bridegroom-elect graduated from Eastern Guilford High School, Gibsonville, and is manager of Brian Doby Citgo / UHaul Rental, Burlington