Harry N.Rousseau;formerly of Belle Vernon;of 604 1/2 E.Gambier St.;Mt.Vernon;Ohio;died Tuesday evening;Oct.5;1982;in Knox Community Hospital;Mr.Vernon;Ohio;following an illness of five weeks duration.  He was 77.  Mr.Rousseau was born Dec.6;1904;in Belle Vernon;a son of the late Arthur and Clotilde Joris Rousseau.  Moving to Ohio 33 years ago;he was a retired glasscutter for Pittsburgh Plate Glass Co.in Mt.Vernon;Ohio.  He was a member of the First Presbyterian Church;Mt.Vernon;Ohio;and was a past member of the Mendelssohn Choir in Pittsburgh;Pa.  Mr.Rousseau was preceded in death by two brothers;Arthur and Ernest Rousseau.  Survivors include his wife;Rose Wehry Rousseau;at home;one son;William Rousseau of Ford City;Pa.;one daughter;Ora Jean Roussean of Mt.Vernon;Ohio;one brother;Gene Rousseau of Mt.Vernon;Ohio;six sisters;Mrs.Adele Deters;Mrs.Camelia Popp and Mrs.Eva Knuttila;all of Belle Vernon;and Mrs.Ora Sherwin of Monessen;Mrs.Marie McDonald of State College;Pa.;and Mrs.Doris Marshall of California;Pa.;five grandchildren and five great-grandchildren.  Friends will be received in the Flowers-Snyder Funeral Home;Mt.Vernon;Ohio;Wednesday from 7 to 9 p.m.  Services will be held Thursday at 9:30 a.m.in the funeral home;with the Rev.William O’Hara;pastor;First Baptist Church;Mt.Vernon;Ohio;officiating.  Graveside Committal Services will be held Thursday at 2:30 p.m.at Belle Vernon Cemetery;with the Rev.Charles D.LaPlaca;pastor;First Presbyterian  Church;Belle Vernon;officiating.