of Grinling Gibbons (b. 1648 ), master wood-worker. 1761 Death of Johann Matthias Gesner (b. 1691 ), scholar. 1778 The Scala opera house opened in Milan , Italy . 1780 Death of Etienne Bonnot de Condillac (b. 1715 ), philosopher. 1792 Death of Richard Arkwright (b. 1732 ), Englishman credited with