Marcel Duchamp
Marcel Duchamp (1887–1968) was a French-American artist widely recognized for pioneering conceptual art through readymades such as 'Fountain,' and for challenging conventional definitions of art. He has a Wikipedia entry, is held in major museum collections including MoMA, Tate, and the Philadelphia Museum of Art, and has been the subject of ongoing critical retrospectives, including a MoMA survey referenced in contemporary press.