John C.(Jack) Willey;54;of Belle Vernon R.D.4;died suddenly Friday;Dec.17;1993;at 10:27 p.m. in the Mon Valley Hospital;Carroll Township. Mr.Willey was born May 8;1939;in North Charleroi;a son of the late Kenneth and Dorothea Sonafelt Willey. He was an employee at the Allenport Palnt of Wheeling-Pittsburgh Steel Corporation. Surviving are his wife;Eileen Sitko Willey;a son;Jonathan;at home;two sisters;Judith Cap of Charleroi and Jane Benedetti of Monongahela;two half-sisters;Janet Hamer of Charleroi and Carol Merritt of Monessen;and a half-brother;Keith Willey of Charleroi. Friends will be received Sunday from 7 to 9 p.m. and Monday from 2 to 4 and 7 to 9 p.m. in the Ferguson Funeral Home Inc.;700 Broad Ave.;Belle Vernon. Funeral services will be held in the funeral home Tuesday at 11 a.m. with the Rev.Edward Hammett of the First United Methodist Church of Charleroi officiating. Interment will be in Belle Vernon Cemetery. The Ferguson Funeral Home Inc.is in charge of arrangements.