Parse this person name:

مأمون م. (مأمون معمّر) مهنا, 1240-1262
user
first_name: مأمون
last_name: مهنا
middle_names:
- معمّر
temporal:
- start: 1240
  end: 1262
  type: life_span
titles: []
extra_info: []
assistant