Parse this person name:

Marten T. X. W. Kristin Franke von Sachsen, etwa 1472-1543
user
first_name: Marten
last_name: Franke
middle_names:
- T.
- X.
- W.
- Kristin
temporal:
- start: 1472
  end: 1543
  type: life_span
titles: []
extra_info: []
assistant