Mary B.Deambrogi;77;of Charleroi;died Saturday;Oct.9;1999;in Adult Assisted Living;Dunlevy. Born Dec.6;1921;in Charleroi;she was a daughter of the late Frank and Frances Cahaday Bertovich. She was formerly employed at the Charleroi plant of Corning Glass. She was a member of Mary;Mother of the Church;a member and trustee of the Charleroi Goodwill Club;the Golden Agers and Senior CItizens;both of Charleroi;and the Catholic Sokol Lodge 27. Survivors include one daughter and son-in-law;Sally Ann and Clark Harrison of Murrysville;one granddaughter;Hayley Harrison;three sisters;Frances Dietz of Elco;Mrs.Andrew (Ann) Rusnak of Monessen and Joan LaRue of Pittsburgh;and numerous nieces and nephews. In addition to her parents;she was preceded in death by her husband;Sergius;in 1995;and by three brothers;John and Paul Bertovich;and Frank Bertovich;who died in infancy. Friends were received Sunday from 2 to 4 and 7 to 9 p.m. in the CARL J.SPALLINO FUNERAL HOME;819 Fallowfield Ave.;Charleroi. Mass of Christian Burial was held today at 11:30 a.m. in Mary;Mother of the Church;Charleroi. Interment followed in Belle Vernon Cemetery.