Elsa Einstein: The Life and Legacy of Albert Einstein's Second Wife
While Albert Einstein is globally renowned for his contributions to theoretical physics, the woman who shared his later years, Elsa Einstein, played a pivotal role in managing his personal life and protecting his intellectual space. A cousin by birth and a partner by choice, Elsa's journey took her from the textile hubs of Germany to the academic halls of Princeton, New Jersey.
Key Facts
- Full Name: Elsa Einstein (née Einstein)
- Relationship to Albert: Maternal first cousin and paternal second cousin
- Birth: January 18, 1876, in Hechingen, Germany
- Death: December 20, 1936, in Princeton, New Jersey
- Role: Acted as Albert Einstein's gatekeeper and manager of their domestic life
- Children: Two daughters, Ilse and Margot, from her first marriage
Early Life and First Marriage
Elsa was born on January 18, 1876, in Hechingen, Germany, to Rudolf Einstein, a textile manufacturer, and Fanny Einstein. Growing up with two sisters, Paula and Hermine, Elsa maintained a childhood connection with her cousin Albert during family visits to Munich, affectionately calling him "Albertle" in her Swabian dialect. This connection was paused in 1894 when Albert moved to Milan.
In 1896, Elsa married Max Löwenthal, a textile trader from Berlin. The couple had three children: daughters Ilse (born 1897) and Margot (born 1899), and a son born in 1903 who died shortly after birth. While the family initially resided in Hechingen, Max moved to Berlin for work in 1902. The marriage ended in divorce on May 11, 1908, after which Elsa and her daughters moved to Berlin and reverted to their maiden name, Einstein.
Marriage to Albert Einstein
Elsa and Albert Einstein began their romantic relationship in April 1912. At the time, Albert was still married to his first wife, Mileva Marić. Following Albert's separation from Mileva in July 1914 and their subsequent divorce on February 10, 1919, Albert and Elsa married on June 2, 1919.
The couple formed a close-knit family unit. Although Albert and Elsa had no children of their own, Albert treated his stepdaughters, Ilse and Margot, as his own children. For a short time, Ilse even served as Albert's secretary. The family lived in the Berlin area and later acquired a summer home in Caputh, Potsdam, in 1929—a project driven largely by Elsa.
Throughout their marriage, Elsa served as Albert's gatekeeper, a role in which she shielded him from charlatans and unwelcome visitors, allowing him to focus on his scientific pursuits.

Later Years and Emigration
In 1933, the Einsteins emigrated from Germany to the United States, settling in Princeton, New Jersey. In August 1935, they purchased a home at 112 Mercer Street, moving in by the autumn of that year.
Shortly after the move, Elsa's health declined. She was diagnosed with kidney and heart problems, as well as a swollen eye. During this period of illness, Albert retreated further into his studies, viewing intellectual work and the study of nature as the forces that would sustain him through his personal troubles. Elsa passed away following a painful illness on December 20, 1936, at the age of 60.
| Category | Details |
|---|---|
| Lifespan | 1876–1936 |
| Birthplace | Hechingen, Germany |
| Spouses | Max Löwenthal (div.), Albert Einstein |
| Children | Ilse and Margot (with Max Löwenthal) |
| Final Residence | Princeton, New Jersey, US |
Frequently Asked Questions
How was Elsa Einstein related to Albert Einstein?
Elsa and Albert were maternal first cousins (their mothers were sisters) and paternal second cousins (their fathers were first cousins).
Did Elsa and Albert Einstein have any children together?
No, they did not have any children together, but Albert raised Elsa's two daughters from her first marriage, Ilse and Margot, as his own.
What role did Elsa play in Albert Einstein's professional life?
Elsa acted as his gatekeeper, protecting him from unwelcome visitors and charlatans so he could focus on his work. Additionally, their daughter Ilse briefly served as his secretary.
Where did Elsa Einstein spend her final years?
Elsa spent her final years in Princeton, New Jersey, after emigrating from Germany in 1933. She lived and eventually died at their home on 112 Mercer Street.
Who was Elsa's first husband?
Elsa's first husband was Max Löwenthal, a textile trader from Berlin. They married in 1896 and divorced in 1908.