Parse this person name:

Victoria Liz Sem Quinten R. Spier, Nederhorst den Berg, flourished 1735-1754
user
first_name: Victoria
last_name: Spier
middle_names:
- Liz
- Sem
- Quinten
- R.
temporal:
- start: 1735
  end: 1754
  type: flourished
titles: []
extra_info:
- Nederhorst den Berg
assistant