Parse this person name:

Crescencia Peláez (1423-1492, flourished 1450-1468)
user
first_name: Crescencia
last_name: Peláez
middle_names: []
temporal:
- start: 1423
  end: 1492
  type: life_span
- start: 1450
  end: 1468
  type: flourished
titles: []
extra_info: []
assistant