Valerian Engelhardt
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Valerian Johann von Engelhardt (Russian: Валериа́н Фёдорович Энгельга́рдт; 1798–1856) was a Russian lieutenant general and director of the Russian Institute of Railway Engineers.
Engelhardt was born into the nobility of Livonia as a member of the Engelhardt family on December 24, 1798, the son of Colonel F. H. Engelhardt.
His brother Nikolai Engelhardt also became a lieutenant general and member of the Order of St. George.