Parse this person name:

Frithjof Losekann-Grein Groth, 1239-1280, flourished 1257-1275
user
first_name: Frithjof
last_name: Losekann-Grein Groth
middle_names: []
temporal:
- start: 1239
  end: 1280
  type: life_span
- start: 1257
  end: 1275
  type: flourished
titles: []
extra_info: []
assistant