Parse this person name:

Cynthia Wallace (1830-1892, flourished 1850-1873)
user
first_name: Cynthia
last_name: Wallace
middle_names: []
temporal:
- start: 1830
  end: 1892
  type: life_span
- start: 1850
  end: 1873
  type: flourished
titles: []
extra_info: []
assistant