Parse this person name:

Roland G. Lemonnier-Arnaud, Sainte Gérardboeuf, flourished 1832-1864
user
first_name: Roland
last_name: Lemonnier-Arnaud
middle_names:
- G.
temporal:
- start: 1832
  end: 1864
  type: flourished
titles: []
extra_info:
- Sainte Gérardboeuf
assistant