Johann Leopold Deumer
- Born on December 6, 1771
- Deceased on August 1, 1840, at the age of 68 years
Parents
- Johannus Léopold Deumer (1725 - 1798)
- Anna Engel Gertrude Kersting (1741 - 1822)
Family
- Married on January 13, 1804, with Catharina Marguareta Kayser (1778 - 1839), issuing
- Johann Léopold (1823 - 1884)