Auguste Painter was a French artist and inventor who is best known for his contributions to the Impressionist movement. He was a contemporary of Pierre-Auguste Renoir, whose six-letter surname is one of the solutions to the crossword. Auguste Painter was also a close friend of philosopher Auguste Comte, whose five-letter surname is another solution. Auguste Painter was also a colleague of the Lumière brothers, whose seven-letter surname is the third solution. Finally, the last solution is the seven-letter surname of Pierre-Auguste Renoir, another French Impressionist painter.