Parse this person name:

Marcus Ortmann, 1247-1292, flourished 1276-1287
user
first_name: Marcus
last_name: Ortmann
middle_names: []
temporal:
- start: 1247
  end: 1292
  type: life_span
- start: 1276
  end: 1287
  type: flourished
titles: []
extra_info: []
assistant