Karen Elizabeth Mann of Mount Carmel, Tenn., and Travis David Lyon of Kingsport, Tenn., plan to be married at 4 p.m., Oct. 23, 2010 at Bluff Mountain Inn, Sevierville, Tenn.The bride-elect is the daughter of James and Patricia Mann of Mount Carmel, and the granddaughter of John Hanson of Church Hill; the late Lola Hanson, formerly of Church Hill; the late Melvin Mann, formerly of Mount Carmel; and Violet Mann of Mount Carmel. She graduated from Volunteer High School in 2004 and received a degree in accounting from East Tennessee State University in 2008 and a master of business administration degree from King College in 2010. At ETSU, she was a member of Delta Sigma Pi. She is employed as a consultant at CGI Federal, Lebanon, Va.The bridegroom-to-be is the son of the late David and Kay Lyon, formerly of Kingsport. He is the grandson of the late Charles and Eula Cooper, formerly of Kingsport; the late Paul Lyon, formerly of Kingsport, and Dolphine Lyon of Kingsport. He graduated in 2001 from Dobyns-Bennett High School, where he was a member of the D-B Marching Band. He attended the University of Tennessee, where he was a member of The Pride of Southland Marching Band and Phi Mu Alpha. He is self-employed as a lighting and energy management consultant and is a member of Vermont United Methodist Church.