Parse this person name:

William Étienne (1295-1348, flourished 1321-1334)
user
first_name: William
last_name: Étienne
middle_names: []
temporal:
- start: 1295
  end: 1348
  type: life_span
- start: 1321
  end: 1334
  type: flourished
titles: []
extra_info: []
assistant