Parse this person name:

Brenda Duncan, 1378-1434, flourished 1401-1411
user
first_name: Brenda
last_name: Duncan
middle_names: []
temporal:
- start: 1378
  end: 1434
  type: life_span
- start: 1401
  end: 1411
  type: flourished
titles: []
extra_info: []
assistant