Théo van Rysselberghe
(1862 - 1926) 

Théophile "Théo" van Rysselberghe (23 November 1862 – 13 December 1926) was a Belgian neo-impressionist painter, who played a pivotal role in the European art scene at the turn of the twentieth century.

https://en.wikipedia.org/wiki/Théo_van_Rysselberghe

"Madame van de Velde et ses trois filles" (Madame van de Velde and her three daughters)
1903
Oil on canvas
105 x 125,5 cm.
Geneva, Musée du Petit Palais.