Parse this person name:

Rowan Westermann, 1831-1905, flourished 1856-1875
user
first_name: Rowan
last_name: Westermann
middle_names: []
temporal:
- start: 1831
  end: 1905
  type: life_span
- start: 1856
  end: 1875
  type: flourished
titles: []
extra_info: []
assistant