Parse this person name:

Guillaume Pelletier-Rossi, 1215-1276, flourished 1241-1254
user
first_name: Guillaume
last_name: Pelletier-Rossi
middle_names: []
temporal:
- start: 1215
  end: 1276
  type: life_span
- start: 1241
  end: 1254
  type: flourished
titles: []
extra_info: []
assistant