Alfred Stieglitz was a pioneering American photographer and modern art promoter. He was born in 1864 to a wealthy family in New Jersey and studied engineering in Germany. Stieglitz helped establish photography as a fine art through his galleries and publications. He championed modernist artists like Georgia O'Keeffe, who he married in 1924. Stieglitz took many photographs of O'Keeffe and landscapes that made him renowned as an early modern artist in photography.