Théo (Théophile) van Rysselberghe [1862-1926] was an Belgian painter, who played a pivotal role in the European art scene at the turn of the century.
His famous portrait of Alice Sèthe, 1888 in blue and gold would become a turning point in his life. This time he used merely points in the portrait. She would later marry the sculptor Paul Dubois. Her sister, Maria Sèthe, also a model of van Rysselberghe, would marry the renowned Art Nouveau architect Henry Van de Velde. In that period he made many Neo-impressionistic portraits, such as the portrait of his wife Maria and their daughter Elisabeth. He had married Marie Monnom in 1889. They went on their honeymoon to the south of England and then to Brittany. This would also result in a number of Neo-impressionistic paintings. In Paris he had a meeting with Theo Van Gogh and managed thus to invite Vincent Van Gogh to the next exhibition in Brussels. That is where Van Gogh sold Vigne Rouge in Montmajour to Anna Boch, the only painting he ever sold.