Lauren Olivia Duncan of Church Hill, and Michael Corey Porter of Mount Carmel, plan to be married in an open-church ceremony at 2 p.m., Sept. 18, 2010, at First Baptist Church, Church Hill.The bride-elect is the daughter of Diane Hall and husband Steve Hall of Kingsport, and Michael Duncan and wife Barbara Duncan of Church Hill. She is the granddaughter of the late Clark Christian, Patricia Christian of Church Hill, and J.C. and Ann Duncan of Church Hill. She graduated from Sullivan South High School in 2004 and received an associate's degree from Northeast State Community College in 2008. She is employed as a surgical tech at Dermatology Associates of Kingsport.The bridegroom-to-be is the son of Eddie and Patricia Porter of Mount Carmel, and the grandson of Craft and Viola Adams of Church Hill, and the late John and Jeanette Isenberg. He graduated from Volunteer High School in 2004 and received an associate's degree from Walters State Community College in 2009. He is employed as a registered nurse at Sycamore Shoals Hospital.Olivia and Michael attend Power Point Ministries Church.