Nicolas de Largillierre and Studio, Madame De Souscarrière (?) And Her Page

Nicolas de Largillierre and Studio
Mme de Souscarrière (?) and her Page
probably 1729
Oil on canvas, 136.5 x 104.1 cm
Bought, 1924
NG3883
https://www.nationalgallery.org.uk/paintings/NG3883