John Louis Nagy;of 820 Brown St.;Belle Vernon;died Tuesday;April 20;1982 at 9 a.m. at his home. He was 58. Mr.Nagy was born March 26;1924 in Belle Vernon and resided in the Belle Vernon area his entire life. He was a member of St.Sebastian Church;Belle Vernon. Mr.Nagy was employed as a junior metallurgist at the Allenport Plant of Wheeling-Pittsburgh Steel Corp. He was preceded in death by his father;Louis Nagy on Nov.28;1978;and a sister;Elizabeth Roskevitch on July 17;1973. Survivors include his mother;Julia Nagy;and a sister;Dolores J.Nagy;both with whom he made his home;three nieces;Kathy Miller and Patty Roskevitch;both of Belle Vernon and Stephanie Roskevitch of Republic;one nephew;John Miller of Belle Vernon;and one great-niece;Karissa Miller of Belle Vernon. Friends will be received in the Shelby D.Ferguson Funeral Home;700 Broad Ave.;Belle Vernon;on Wednesday from 7 to 9 p.m. and Thursday from 2 to 4 and 7 to 9 p.m. A Prayer Service will be held on Friday;April 23;at 9:30 a.m. in the funeral home followed by a Mass of Christian Burial at 10 a.m. in St.Sebastian Church;Belle Vernon. Burial will be in Belle Vernon Cemetery. Shelby D.Ferguson;funeral director;is in charge of arrangements.