MARSHALL - Mary Lyddon and Travis Swanson announce their engagement. Parents of the couple are Marvin and Chrys Lyddon of Marshall and Larry and Donna Swanson of Marshall. Lyddon is a graduate of Chaska High School, graduate of Bellevue University and graduate of Colorado Technical University. She is employed by the Schwan Food Co. Swanson is a graduate of Marshall High School. He is employed with the Sara Lee Corporation. The couple plans to marry on May 14, 2011 in Marshall, with the reception at the Landmark Mercantile in Marshall.