Georges Seurat was a French pointillist painter who is best known for his painting A Sunday Afternoon on the Island of La Grande Jatte. He was born in 1859 and died in 1891. He developed a technique called pointillism, which involved using tiny dots of color to create an image. His work was influential in the development of modern art. Seurat's most famous painting, A Sunday Afternoon on the Island of La Grande Jatte, is considered a masterpiece of pointillism.