Parse this person name:

Rouwhorst Brandt, Liam U. Sylvie H., 1848-1923
user
first_name: Liam
last_name: Rouwhorst Brandt
middle_names:
- U.
- Sylvie
- H.
temporal:
- start: 1848
  end: 1923
  type: life_span
titles: []
extra_info: []
assistant