Yvonne Dellamalva Righetti of 404 Second St.;Monessen;died Friday;Nov.16;1984;at 10:35 p.m. in Latrobe Area Hospital;Latrobe. She was 80. Mrs.Righetti was born April 16;1904;in Monessen;a daughter of the late Leopold and Amelia LeQuea Michaux. She was preceded in death by her first husband;Dominick Dellamalva;who died in 1960;and by her second husband;Joseph Righetti;who died Oct.3;1984. She was a member of St.Cajetan Roman Catholic Church;and the Regina Lodge of the Sons of Italy;both of Monessen. Mrs.Righetti was a former member of the St.Cajetan Church Altar Society. Surviving are one daughter;Dorothy Dellamalva of Monessen;two sons;Frank Dellamalva of Monessen and Henry Dellamalva of Simi Valley;Calif.;two step-daughters;Mrs.Angeline Greer of Monessen and Mrs.Josephine Bianchi of Danville;Calif.;one step-son;Joseph Righetti of Monessen; 19 grandchildren;and 18 great-grandchildren. Friends will be received in the Rhome Funeral Home;Inc.;1209 Grand Blvd.;Monessen;Sunday from 7 to 9 p.m. and Monday from 2 to 4 and 7 to 9 p.m. A Wake Service will be held Monday evening in the funeral home. A Blessing Service will be held Tuesday at 10:30 a.m. in the funeral home;followed by an 11 a.m. Mass of Christian Burial in St.Cajetan R.C.Church;Monessen;with the Rev.P.Lino Ramellini;pastor;as celebrant. Burial will be in Belle Vernon Cemetery. The Rhome Funeral Home Inc.;is in charge of arrangements.