Parse this person name:

Marcial Nieto (1812-1873, flourished 1834-1856)
user
first_name: Marcial
last_name: Nieto
middle_names: []
temporal:
- start: 1812
  end: 1873
  type: life_span
- start: 1834
  end: 1856
  type: flourished
titles: []
extra_info: []
assistant