Pablo Picasso was one of the most famous Spanish painters who lived from 1881 to 1973. He helped pioneer modern art through his Cubist period where he used geometric shapes in his paintings. Some of his most famous works include Les Demoiselles d'Avignon, Guernica, and numerous portraits. Throughout his life, Picasso had many romantic relationships with women and married twice. He was also politically active as a member of the French Communist Party and used his artwork to promote peace.