Grace Costello;83;of 1303 Maplehurst Drive;Somerset;died Sunday;Dec.31;1995;in Allegheny General Hospital;Pittsburgh. Born July 14;1912;in Tarentum;she was a daughter of the late Felix and Georgiana Johns Protin. Mrs.Costello was United Methodist. She had lived in Belle Vernon until 1993 when she moved to Somerset. Survivors include her husband;Joseph Costello;one daughter;Mrs.Ronald (Betty Jo) Waggoner of Somerset;one brother;Willian Protin of Belle Vernon;two grandchildren;Joseph Waggoner and Kyra Jo Morris;and three great-grandchildren;Justin and Shanna Morris and Daniel Waggoner. In addition to her parents;she was preceded in death by a sister;Betty Protin;and a brother;Louis Protin. Friends will be received Tuesday from 2 to 4 and 7 to 9 p.m.in the Ferguson Funeral Home Inc.700 Broad Ave.;Belle Vernon;where services will be held Wednesday at 11 a.m.with the Rev.Dr.Thomas St.Clair;pastor of the First United Methodist Church of Belle Vernon;officiating. Burial will be in Belle Vernon Cemetery. The Ferguson Funeral Home Inc.is in charge of arrangements.