Abt 1806 - 1870 (64 years)
Set As Default Person 
| Name | Mary Catherine Hellen | |
| Birth | Abt 1806 | |
| Gender | Female | |
| Death | 1870 | |
| Age | 64 years | |
| Person ID | I2023 | A Demo Tree |
| Last Modified | 10 Apr 2023 | |
| Family | John Adams, III b. 4 Jul 1803, Washington, District of Columbia, USA  d. 23 Oct 1834, Washington, District of Columbia, USA (Age 31 years) | |
| Marriage | 25 Feb 1828 | White House, Washington, District of Columbia, USA |
| Family ID | F992 | Group Sheet | Family Chart |
| Last Modified | 10 Apr 2023 | |
| Reference | Your Name Here. "Mary Catherine Hellen". A TNG-WordPress Integration Demonstration. https://uniquelyyourshosting.net/genealogy/getperson.php?personID=I2023&tree=demotree (accessed November 21, 2024). |
