Oppenheimer was born Julius Robert Oppenheimer into a non-observant Jewish family in New York City on April 22, 1904, to Ella (née Friedman), a painter, and Julius Seligmann Oppenheimer, a successful textile importer. Robert had a younger brother, Frank, who also became a physicist. Their father was born in Hanau, when it was still part of the Hesse-Nassau province of the Kingdom of Prussia, and as a teenager made his way to the United States in 1888, without money, higher education, or even English. He was hired by a textile company and within a decade was an executive there, eventually becoming wealthy. In 1912, the family moved to an apartment on Riverside Drive near West 88th Street, Manhattan, an area known for luxurious mansions and townhouses. Their art collection included works by Pablo Picasso, Édouard Vuillard, and Vincent van Gogh.