Parse this person name:

Marie-Therese Gierschner, 1746-1825, flourished 1767-1779
user
first_name: Marie-Therese
last_name: Gierschner
middle_names: []
temporal:
- start: 1746
  end: 1825
  type: life_span
- start: 1767
  end: 1779
  type: flourished
titles: []
extra_info: []
assistant