Margaret Irene Usher;82;of Fayette City;died Friday;Dec.15;1989;at 3 p.m. in the Monongahela Valley Hospital after a lengthy illness.  She was born in Westmoreland County Nov.1;1907;a daughter of the late Harry and Mary Rosnak Cochenour.  Mrs.Usher was a member of the Pricedale Union Church.  She is survived by her husband;John F.Usher of Fayette City;three sons;John Usher of Belle Vernon;Charles Usher of Fellsburg and George Usher of Perryopolis;two daughters;Mrs.Joseph (Marie) Coccari of Monessen and Mrs.Daniel (Betty) Evangelist of Belle Vernon;17 grandchildren;25 great-grandchildren;one great-great-grandson and one sister;Mrs.Ann Bachrik of West Newton.  Friends will be received at the Howard W.McCrory Funeral Home;Fayette City;Sunday from 2 to 4 and 7 to 9 p.m.and Monday until 1:30 p.m.;when services will be held in the funeral home with Rev.David Reeves;pastor of Pricedale Union Church;officiating.  Interment will be in Belle Vernon Cemetery.  The Howard W.McCrory Funeral Home is in charge of arrangements.