| Birth | November 12, 1826 23 8 |
| Death of a paternal grandfather | Joachim Diedrich Duncker May 29, 1828 (Age 18 months) |
| Marriage of parents | Johann Heinrich Dunker — Catharina Maria Bredehöft — View this family December 1, 1841 (Age 15 years) |
| Death of a maternal grandfather | Johann Hinrich Wilhlem Bredehöft November 2, 1842 (Age 15 years) |
| Death of a maternal grandmother | Catharina Maria Tipken November 2, 1842 (Age 15 years) |
| Death of a father | Johann Heinrich Dunker 1868 (Age 41 years) |
| Birth of a daughter #1 | Rebecca Dorothea Dunker September 13, 1875 (Age 48 years) |
| Death | February 29, 1888 (Age 61 years) |