Sir John Shaw and his Family in the Park at Eltham Lodge, Kent Arthur William Devis (1712-1787)

The picture has something of this: people, tree, woman, group, man, recreation, child, outdoors, dog, grass, wear, home, two, park, girl, mammal, leisure, cavalry, landscape.
Perhaps it’s a painting of a man, woman, and two children in a park with a horse and carriage in the foreground and a man and a dog.