Gertrude Costenoble Hornbostel
Gertrude Costenoble Hornbostel (1893 – 1982) was born on 20 December 1893, in Reinfelden, Switzerland, to Gertrude Blum and Ludwig Wilhelm Herman Costenoble. In 1903 she and her older brother Hermann moved with their parents to settle in Saipan, which at the time was a territory of Germany.
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