Heinrich Michaelis, son of Ludwig Michaelis, was born in approximately 1791 in the German region of Westfalen. He served in Napoleon's army and fought against the Russians. He was captured by the Russians, and in 1812, was settled in the Volga German colony of Holstein. He is recorded on the Holstein marriage register marrying 27 February 1817 Maria Elisabeth Spielmann, daughter of Konrad Spielmann of Stephan. He is recorded on the 1834 Census of Holstein in Household No. 67, on the 1850 Census of Holstein in Household No. 107, and on the 1857 Census of Holstein in Household No. 111.
- 1834 Census of Holstein.
- 1850 Census of Holstein.
- 1857 Census of Holstein.
- Belousov, S.V. "Prisoners of war of Napoleon's army in the Volga region: the arrangement, content, relationships with the local population." Bulletin of the Samara State University, No. 1 (Samara, Russia: Samara State University, 2006): 48-55.
- Marriage register of Holstein.