Zachary Lightner and Kristin Seiss Zachary and Kristin, both of Auburn, plan to be married September 19th, in Auburn, Ind.. The bride to be is daughter of Ann Seiss and Jeff Seiss, of Auburn. She attended Indiana University, Bloomington and is an associate broker at Van Horne Land Co. Her fiance is the son of Monte and Beth Lightner, of Roanoke, Ind.. He attended Purdue University and is an attorney at Mefford Weber and Blythe, and a deputy prosecutor for DeKalb County.