Família: Johann Andreas Grassmann / Anna Margaretha Reitzer (F5754)
cas. +/- 1802Heinrich Peter Grassmann (1747-1795) 
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Sophia Elisabeth Griebel (1752-1781)
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| Heinrich Mathias Grassmann (1777-1780) |
Johann Jakob Grassmann (1773-1815)  |
| Johann Andreas Grassmann (1780-1855)
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| Anna Margaretha Reitzer (1781-1814) |
| Heinrich Mathias Grassmann (1804- ) |
| Anna Catharina Grassmann (1810-1820) |
| Johann Jakob Grassmann (1813- ) |
| Heinrich Jacob Grassmann (1806-1843) |