Parse this person name:

Aya van Herstal, 1244-1309, flourished 1264-1274
user
first_name: Aya
last_name: van Herstal
middle_names: []
temporal:
- start: 1244
  end: 1309
  type: life_span
- start: 1264
  end: 1274
  type: flourished
titles: []
extra_info: []
assistant