In 1880 he married Ida Amalia Kaufmann, the daughter of another wealthy Jewish merchant family. Two years later they had their first child, named Amalia ("Emmy") after her mother. Emmy Noether went on to become a central figure in abstract algebra. In 1883 they had a son named Alfred, who later studied chemistry before dying in 1918. Their third child, Fritz, was born in 1884. Like Emmy, Fritz Noether also found prominence as a mathematician. Little is known about their fourth child, Gustav Robert, born in 1889. He suffered from continual illness and died in 1928.