Josephine Einstein Schwarzschild later used the surname Stone in San Francisco.

Evidence

Josephine's federal naturalization file carries the same Stuttgart birth date and 1909 Schwarzschild marriage, records her lawful entry under Josephine Einstein Schwarzschild, and contains both her Schwarzschild oath signature and the court order changing her name to Josephine Stone. The 1950 census then places Josephine Stone as sister of Melita Levy and Ludwig Einstein, and the California death index preserves her exact birth date and her mother's maiden name as Schweitzer. These independent records satisfy the identity bridge.

People

Josephine Einstein Schwarzschild Stone, Siegfried Schwarzschild

Places

San Francisco, California

Family lines

Fellheim–Laupheim Einstein

Supporting sources

Auguste Saalfeld obituary, Josephine Schwarzschild naturalization file and legal name-change order, Einstein-Levy-Stone household in the 1950 United States census, California death index entry for Josephine Stone

Contrary sources

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What remains uncertain

The identity is resolved. A minor date discrepancy remains: Josephine's sworn naturalization records report the marriage on 8 August 1909, while the Stuttgart memorial biography reports 5 August 1909.