Catherine Bemis Harbach was born 29 August 1753 in Sutton, Worcester County, Massachusetts, United States to Benjamin Bemis (1725-1793) and Sarah Garfield (1723-1797) and died 22 July 1820 Sutton, Worcester County, Massachusetts, United States of unspecified causes. She married Thomas Harbach (1741-1821) 15 January 1777 in Massachusetts.
Children
| Name | Birth | Death | Joined with |
| Sarah Harbach (1777-1847) | |||
| Eunice Harbach (1779-1847) | |||
| Thomas Harbach (1782-1850) | |||
| Henry Bright Harbach (1784-1872) | |||
| Sophia Harbach (1786-) | |||
| Catherine Harbach (1788-) | |||
| Abigail Harbach (1790-1849) | 20 September 1790 Sutton, Worcester County, Massachusetts, United States | 25 March 1849 Sutton, Worcester County, Massachusetts, United States | Calvin Hall (1789-1855) Brigham Young (1801-1877) |
| Persia Harbach (1792-1795) | |||
| Benjamin Harbach (1794-1794) | |||
Siblings
| Name | Birth | Death | Joined with |
| Mary Bemis (1749-1818) | |||
| Catherine Bemis (1753-1820) | 29 August 1753 Sutton, Worcester County, Massachusetts, United States | 22 July 1820 Sutton, Worcester County, Massachusetts, United States | Thomas Harbach (1741-1821) |
| Tabitha Bemis (1754-1831) | |||
| Persis Bemis (1757-1795) | |||
| Benjamin Bowman Bemis (1763-1830) | |||