Mrs.Bernardine Sylvester;59;of 805 Graham Ave.;Belle Vernon;died Sunday;Jan.3;1971.  Survivors include her husband;Reno;one son;Michael of Belle Vernon;two daughters;Mrs.Wallace (Maureen) Walczynski of Oak Forest;Ill.;and Mrs.Dell (Valerie) Rathe of Lincoln;Neb.;her mother;Mrs.Margaret Davis of Belle Vernon;one brother;James Davis of Belle Vernon;two sisters;Mrs.Ridsy Calderone and Mrs.Robert Dominico;both of Belle Vernon.  Services were held Wednesday;Jan.6;1971;with burial in Belle Vernon Cemetery.