Mary Kay Rockwell, 25, of RD2, Rejmer Road, Berkshire, PA went to be with her Lord Dec. 6, 1980, at her home, following an extended illness. She is survived by her husband, Rodney Rockwell; two sons, Mark R. and Matthew J. Rockwell, all of Berkshire; a brother, James Callahan; two sisters, Mrs. Randal (Theresa) Tyner and Lisa J. Callahan, all of Newark Valley; her parents, Mary Jane Callahan of Berkshire and James E. Callahan of Binghamton; her paternal grandmother, Mrs. Mary E. Callahan of Newark Valley; her maternal grandparents, Mr and Mrs Otto Waitl of Tampa FL; several aunts, uncles, and a nephew also survive. She was a graduate of Newark Valley Central School and had attended Corning Community College. She was a former employee of Riverview Manor, Owego, and of IBM.