Parse this person name:

Alexandre Y. Y. Alfonso Etzler, Melsungen, flourished 1832-1865
user
first_name: Alexandre
last_name: Etzler
middle_names:
- Y.
- Y.
- Alfonso
temporal:
- start: 1832
  end: 1865
  type: flourished
titles: []
extra_info:
- Melsungen
assistant