Josephine Marie Heller
First wife of Dr. Robert Matthias Hofstätter. Mother of Peter R. Hofstätter. Wife of chemist Fritz Hansgirg.
Focus
Mother of Dr. Peter R. Hofstätter
Wrote to Eleanor Roosevelt to free her interned husband
Second marriage to industrial chemist Fritz Hansgirg
Vienna Before the Fall
Josephine Marie Heller was born Josefine Maria Theresia Heller in the final years of the Austro-Hungarian Empire. She married Dr. Robert Matthias Hofstätter, a prominent gynecologist and pineal gland researcher at the University of Vienna. The marriage took place in the cosmopolitan heart of a capital that still considered itself the center of European culture.
They had one child together, Peter Robert Adolf Maria Hofstätter, born on October 20, 1913, who would become Germany's most influential and controversial postwar psychologist.
[GED]GED — Genealogy DatabaseGEDCOM Master File: William Erastus PlattThe marriage to Robert Hofstätter ended in divorce, and Josephine entered a second marriage that would pull her into the center of one of the war's quieter dramas.
Fritz Hansgirg and the Magnesium Wars
Josephine's second husband was Fritz Johann Hansgirg (1891-1949), a brilliant Austrian electrochemist and metallurgist. In 1928, Hansgirg invented the carbothermic magnesium reduction process, a method for producing high-purity magnesium at scale using readily available raw materials. The process was cheaper and faster than the existing electrolytic methods, and it made Hansgirg a figure of international interest.
His expertise drew contracts from around the globe. He helped establish magnesium plants in Austria and in Japan, at the Chosen Nitrogen fertilizer complex. By the late 1930s, as the Third Reich expanded, Hansgirg was working with American industrialist Henry J. Kaiser in California, building magnesium production capacity for what was clearly going to be a war economy.
The FBI Arrest
Nine days after the attack on Pearl Harbor, on December 16, 1941, FBI agents arrested Fritz Hansgirg on a presidential warrant. Despite holding strong anti-Nazi sentiments, despite his work for American industry, he was classified as an "enemy alien" and deemed "potentially dangerous to the public peace and safety of the United States."
[S22]S22 — Family NarrativeRobert Matthias Hofstätter report draft (2026-01-18)The irony was brutal. Hansgirg's magnesium patents were already being used by the U.S. military. Yet his Austrian citizenship, combined with the strategic sensitivity of his chemical knowledge, made him a target for internment under the same Executive Order that would soon sweep up Japanese Americans on the West Coast.
He was held in a series of internment camps: first in San Antonio, Texas, then in Stringtown, Oklahoma. He was not accused of espionage. He was accused of being able to be a spy.
The Letter to Eleanor Roosevelt
With her husband locked away indefinitely and legal channels exhausted, Josephine wrote a handwritten letter to First Lady Eleanor Roosevelt.
The argument Josephine laid out was agonizingly complex. Fritz could not publicly and forcefully criticize Adolf Hitler, because her son from her first marriage, Peter Hofstätter, was at that very moment serving in the Wehrmacht as a military psychologist. Any outspoken denunciation by Fritz in America could result in lethal retaliation against Peter in Europe.
It was the impossible calculus of a mother caught between two continents and two wars: pleading her husband's loyalty to America, while her son served a regime she had fled, and her husband sat in a camp because he knew how to make the metal that powered both sides' war machines.
Eleanor Roosevelt forwarded the letter to FBI Director J. Edgar Hoover. The appeal contributed to Hansgirg's eventual parole.
[S22]S22 — Family NarrativeRobert Matthias Hofstätter report draft (2026-01-18)Black Mountain College
Fritz was released on parole to Black Mountain College in North Carolina, the legendary experimental school that counted Josef Albers, Buckminster Fuller, and John Cage among its faculty. There, the Austrian metallurgist whose patents had built magnesium plants across three continents spent his remaining years teaching chemistry and physics to art students in the Appalachian foothills.
He died in 1949, four years after the war ended, having never fully recovered his freedom or his career. He was fifty-eight.
[S22]S22 — Family NarrativeRobert Matthias Hofstätter report draft (2026-01-18)A Life Across Empires
Josephine Heller's trajectory, from the medical salons of pre-war Vienna to the anxieties of wartime internment in the American South to the avant-garde classrooms of Black Mountain, follows the arc of the entire twentieth century's Austrian diaspora. She witnessed the collapse of the Habsburg Empire, the rise and fall of the Third Reich, and the fractured post-war order that scattered her family across four countries.
Through her son Peter, who survived the Wehrmacht and rebuilt his career in American and then German academia, and through her granddaughter Nadina, who married into the Goodman family in 1966, Josephine's lineage connects the intellectual circles of imperial Vienna to the medical corridors of Chandler, Arizona.
Sources
- [GED]↑GEDCOM Master File: William Erastus PlattGenealogy Database
- [S22]↑Robert Matthias Hofstätter report draft (2026-01-18)Family Narrative
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