ST. JOSEPH - Scott Mathiowetz and Cheri Supalla announce their engagement. Parents of the couple are Reinhold and Connie Mathiowetz of Marshall, and Curt and Margaret Supalla of Owatonna. Mathiowetz is a 2004 graduate of Marshall High School and a 2008 graduate of South Dakota State University in Brookings, S.D. He is employed as a civil engineer for R and G Construction in Marshall. Supalla is a 2002 graduate of Owatonna High School and a 2006 graduate of the College of St. Benedict in St. Joseph. She is a dietitian at St. John's University in Collegeville. The couple plans an Oct. 9, 2010, wedding at Sacred Heart Catholic Church in Owatonna.