Parse this person name:

Dietz Wernecke, Walther Galina Hellmuth, 1763-1830
user
first_name: Walther
last_name: Dietz Wernecke
middle_names:
- Galina
- Hellmuth
temporal:
- start: 1763
  end: 1830
  type: life_span
titles: []
extra_info: []
assistant