Thecla Margaretha von der Haar
- Born: 1714, Hollenstede, Germany
- Marriage (1): Theodor Herm Henrich Wessel on 15 Nov 1735 in Schwagstorf, Germany
- Died: 16 Jan 1784, Hollenstede, Germany at age 70
- Buried: Jan 1784, Hollenstede, Germany
Another name for Thecla was Theola, Thela.
Thecla married Theodor Herm Henrich Wessel, son of Hermannus Wessel and Gesina Thesing, on 15 Nov 1735 in Schwagstorf, Germany. (Theodor Herm Henrich Wessel was born on 16 Aug 1705 in Hollenstede, Germany, christened on 16 Aug 1705 in Schwagstorf, Germany, died in Mar 1759 in Hollenstede, Germany and was buried on 24 Mar 1759 in Schwagstorf, Germany.)