Walter Adolph Georg Gropius (May 18, 1883 – July 5, 1969) was a German architect and founder of the Bauhaus School, who, along with Ludwig Mies van der Rohe, Le Corbusier and Oscar Niemeyer, is widely regarded as one of the pioneering masters of modern architecture.
Born in Berlin, Walter Gropius was the third child of Walter Adolph Gropius and Manon Auguste Pauline Scharnweber.
Gropius married Alma Mahler (1879–1964), widow of Gustav Mahler. Walter and Alma's daughter, named Manon after Walter's mother, was born in 1916. When Manon died of polio at age 18, composer Alban Berg wrote his Violin Concerto in memory of her (it is inscribed "to the memory of an angel"). Gropius and Alma divorced in 1920. (Alma had by that time established a relationship with Franz Werfel, whom she later married.) In 1923, Gropius married Ise (Ilse) Frank (d. 1983), and they remained together until his death. They adopted Beate Gropius, also known as Ati.