CONSERVATION OF SEVERAL STENCILLED WINDOWS THROUGHOUT THE NAVE AND THE ALTAR WINDOW. THE ALTAR GRISAILLE WINDOW IS LIKELY THE OLDEST IN SITU PAINTED GLASS WINDOW IN CANADA. THE WINDOW WAS DESIGNED AND BUILT BY ELIZABETH POSTHUMA SIMCOE AND HER SEVEN DAUGHTERS UPON THEIR RETURN TO ENGLAND AFTER JOHN GRAVES SIMCOE SERVICE AS FIRST GOVERNOR GENERAL OF UPPER CANADA