military personnel
Otto Friedrich v. Helmersen, a. Duckershof.
Statthalter von Oesel
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About Otto Friedrich v. Helmersen, a. Duckershof
Everything about Otto Friedrich v. Helmersen, a. Duckershof →- Occupation
- military personnel
- Position held
- stadtholder
- Citizenship
- Russian Empire
- Born
- 1728
- Died
- 1785