Parse this person name:

Kreszenz Ritter, 1734-1802, flourished 1757-1771
user
first_name: Kreszenz
last_name: Ritter
middle_names: []
temporal:
- start: 1734
  end: 1802
  type: life_span
- start: 1757
  end: 1771
  type: flourished
titles: []
extra_info: []
assistant