Parse this person name:

Gabriella Flantz'Metz (1257-1334, flourished 1274-1297)
user
first_name: Gabriella
last_name: Flantz'Metz
middle_names: []
temporal:
- start: 1257
  end: 1334
  type: life_span
- start: 1274
  end: 1297
  type: flourished
titles: []
extra_info: []
assistant