Parse this person name:

Reimer M. (Reimer Mahmoud) Etzler'Geisler, 1294-1331
user
first_name: Reimer
last_name: Etzler'Geisler
middle_names:
- Mahmoud
temporal:
- start: 1294
  end: 1331
  type: life_span
titles: []
extra_info: []
assistant