Details from Drinkstone Park, Cornard Woods? circa 1747 by Thomas Gainsborough
The title of the artwork shows that there is some doubt surrounding the place depicted in the painting: it could be Cornard Woods in Suffolk, which was the setting of other works by the artist, including the similar canvas in the collection of the National Gallery of London; or it could be Drinkstone Park, since the park's owner was also the owner of this canvas.
See the painting at Museu de Artes São Paulo