Family #163 in the 1775 Grimm census.
Family #8 in the 1798 Grimm census.
Family #71 in the 1834 Grimm census.
The 1775 and 1798 Census of the German Colony on the Volga, Lesnoy Karamysh, also known as Grimm; Published by the American Historical Society of Germans from Russia, Lincoln, NE, USA; Published 1995; family #163 in the 1775 census, Martin Wittman, age 20; family #8 in the 1798 census, Martin Wittman, age 46.
1834 Census of Grimm in the District of Saratov, Russia, dated 2 February 1835; Translated by Brent Mai, Concordia University, Portland, Oregon; Published by Dynasty Publishing, Beaverton, OR, USA; Published 2011; page 22, family #71, line 782, Martin Wittmann, age 63 in 1816, deceased 1831.