Mary DeRosa Fiorino;90;of 701 Green St.;Belle Vernon;died Monday;March 12;1990;at 5:25 a.m.in Mon Valley Hospital;Carroll Township. She was born July 5;1899;in Cosczena;Italy;a daughter of the late Sam and Seraphia Guarascio DeRosa. Mrs.Fiorino was a member of St.Sebastian Roman Catholic Church of Belle Vernon and the Anita Garibaldi Society of Belle Vernon. She was a lifelong resident of the Belle Vernon community. In addition to her parents;she was preceded in death by her husband;John Fiorino;on March 5;1956. She is survived by three sons;Anthony R.Fiorino of Philadelphia;Louis A.Fiorino of Belle Vernon and Samuel J.Fiorino of Houston;Pa.;two daughters;Mrs.George (Rita) Radock of Fairhope and Mrs.Helen Yocolano of Donora;two sisters;Mrs.Anna Scaglione of Monongahela and Mrs.Rose Forstyhe of Belle Vernon;six grandchildren;and many great and great-great grandchildren. Friends will be received at the Leonard J.Parzynski Funeral Home;626 Broad Ave.;Belle Vernon;Tuesday from 7 to 9 p.m.and Wednesday from 2 to 4 and 7 to 9 p.m. A blessing service will be held Thursday at 9:30 a.m.in the funeral home;followed at 10 a.m.at St. Sebastian Roman Catholic Church;Belle Vernon. Interment will be held in Belle Vernon Cemetery. The Leonard J.Parzynski Funeral Home is in charge of arrangements.