Parse this person name:

Menard, Luc Denis Y. William., Allain-sur-Mer (1744-1778)
user
first_name: Luc
last_name: Menard
middle_names:
- Denis
- Y.
- William
temporal:
- start: 1744
  end: 1778
  type: life_span
titles: []
extra_info:
- Allain-sur-Mer
assistant