Grace Mustybrook;78;formerly of the Belle Vernon Apartments;died Saturday;Nov.9;1991;at 7:25 p.m.in Jefferson Center Hospital. She was born Sept.1;1913;in Belle Vernon;a daughter of the late George P.and Germaine Castine Kyle Sr. She was a member of the First United Methodist Church;Belle Vernon;and the Ruth Circle of the church. She had been a resident of Belle Vernon since 1981 and formerly lived in Monessen. In addition to her parents;she was preceded in death by her husband;Michael Mustybrook on June 25;1981;two brothers;John and Robert Kyle;and one sister;Denise Paluso. Survivors include one son;George Mustybrook of Rockford;Ill;four daughters;Mrs.Martin (Betty Mae) Kronander of Orange;Va.;Mrs.Demetries (Mary Gene) Bridge of Belle Vernon;Mrs.Robert (Billie Ann) Gilmore of West Fairview;and Mrs.Michael (Denise) Milhalic of Milroy;four brothers;George P.Kyle of Belle Vernon;Gene Kyle of Chicago;Charles Kyle of Williamsport;and Ralph Kyle of Winter Haven;Fla.;and one sister;Mrs.Elmira Steer of Belle Vernon;19 grandchildren and eight great-grandchildren. Friends will be received Monday from 7 to 9 p.m.and Tuesday from 2 to 4 and 7 to 9 p.m.in the Ferguson Funeral Home Inc.;700 Broad Ave.;Belle Vernon;where funeral services will be held Wednesday at 1 p.m.with the Dr.Rev.Thomas St.Clair officiating. Burial will be in Belle Vernon Cemetery. The Ferguson Funeral Home Inc.is in charge of the arrangements.