Dawn E. Arentz, 78, of Littlestown, died Sunday A.M., March 25, at her home.  She was the widow of Clair E. Arentz who died April 3, 2010.  Born January 17, 1934 in Gettysburg, she was the daughter of the late James R. & Delta E. (Snyder) Strevig.  She was a homemaker and a member of Christ U.C.C., Littlestown.   Dawn is survived by three daughters:  Mona L. Herring of Littlestown; Barbara K. Woods of New Bloomfield; Diane E. Gross of Littlestown; two sons:  Clair J. Arentz and William R. Arentz, both of Littlestown; 12 grandchildren and 17 great grandchildren.   Funeral Service is Thursday, March 29, at 11 A.M. at Little's Funeral Home, Littlestown with her nephew, The Rev. Craig Arentz officiating.  The Viewing is private. Interment is in Christ Church Cemetery, Littlestown.  Memorials in Dawn's name may be to:  Christ U.C.C., 131 Christ Church Rd., Littlestown, PA  17340.