Gregorius Hallenius Gregorius A. Hallenius, Grels Hallenius
Finnish historian
- Sex or Gender:
- male
- Date of Birth:
- 1702
- Date of Death:
- 1772
- Place of Death:
- Або (at present: Turku)
- Country of citizenship:
- Finland
- Occupation:
- historian
- Viaf ID:
- 306247834
