Parse this person name:

Gregorio Echevarría (1211-1252, flourished 1235-1247)
user
first_name: Gregorio
last_name: Echevarría
middle_names: []
temporal:
- start: 1211
  end: 1252
  type: life_span
- start: 1235
  end: 1247
  type: flourished
titles: []
extra_info: []
assistant