Parse this person name:

Osvaldo Seguí, 1209-1251, flourished 1227-1245
user
first_name: Osvaldo
last_name: Seguí
middle_names: []
temporal:
- start: 1209
  end: 1251
  type: life_span
- start: 1227
  end: 1245
  type: flourished
titles: []
extra_info: []
assistant