Parse this person name:

Helmar Lachmann, 1216-1266, flourished 1246-1260
user
first_name: Helmar
last_name: Lachmann
middle_names: []
temporal:
- start: 1216
  end: 1266
  type: life_span
- start: 1246
  end: 1260
  type: flourished
titles: []
extra_info: []
assistant