Mechthild von Tonna1125–
- Name
- Mechthild von Tonna
| Birth | about 1125 25 23 |
| Death of a paternal grandmother | Helinburg von Lohra after 1133 (Age 8 years) |
| Death of a father | Lambert I. von Tonna October 3, 1149 (Age 24 years) |
| Birth of a son #1 | Burchard IV von Querfurt about 1185 (Age 60 years) |
| Death of a husband | Burchard III von Querfurt 1190 (Age 65 years) |
| Death of a son | Burchard IV von Querfurt 1243 (Age 118 years) |
| Family with parents |
| father |
Lambert I. von Tonna Birth: about 1100 25 20 Death: October 3, 1149 — Erfurt, Thüringen, Germany |
| mother |
Mathilda von Are Birth: about 1102 |
| herself |
Mechthild von Tonna Birth: about 1125 25 23 |
| Family with Burchard III von Querfurt |
| husband |
Burchard III von Querfurt Birth: about 1147 52 Death: in battle — 1190 — Palestine. |
| herself |
Mechthild von Tonna Birth: about 1125 25 23 |
| son |
Burchard IV von Querfurt Birth: about 1185 38 60 Death: 1243 |