Parse this person name:

Sieghard Winkler (1725-1776, flourished 1744-1767)
user
first_name: Sieghard
last_name: Winkler
middle_names: []
temporal:
- start: 1725
  end: 1776
  type: life_span
- start: 1744
  end: 1767
  type: flourished
titles: []
extra_info: []
assistant