Parse this person name:

Steven Matthews (1237-1286, flourished 1253-1269)
user
first_name: Steven
last_name: Matthews
middle_names: []
temporal:
- start: 1237
  end: 1286
  type: life_span
- start: 1253
  end: 1269
  type: flourished
titles: []
extra_info: []
assistant