Mary D.Zeli;74;of 420 Westmoreland St.;Belle Vernon;died Saturday;March 3;1990;at 12:26 a.m.in Mon Valley Hospital Inc.;Carroll Township. Born Oct.5;1915;in Scottdale;she was the daughter of the late Joseph and Filomena DeFazio Delia. A Belle Vernon resident for approximately 70 years;Mrs.Zeli was a member os St.Sebastian Roman Catholic Church and the Legion of Mary of the church. She retired in 1974 from the Belle Vernon Area School District;where she had been a janitress. She was a member and financial secretary of the Belle Vernon Golden Agers. Surviving are her husband;Bruno Zeli;three brothers;Frank and James Delia;both of Belle Vernon;and Joseph Delia of Port Vue;and one sister;Rose Delia of Belle Vernon. Friends will be received Saturday from 7 to 9 p.m.in the Ferguson Funeral Home Inc.;700 Broad Ave.;Belle Vernon;where a prayer service will be held Monday at 9:30 a.m.;followed by Mass of Christian Burial at 10 a.m.in St.Sebastian Roman Catholic Church;Belle Vernon. Interment will follow in Belle Vernon Cemetery. Arrangements are being handled by the Ferguson Funeral Home Inc.