Gregorovius, Ferdinand, 1821-1891 (Personal Name)
- Gregorovios, Pherdinandos, 1821-1891
- Earlier heading: Gregorovius, Ferdinand Adolf, 1821-1891
- Gregoroviou, Pherdinandou, 1821-1891
- Gregorovius, F. (Ferdinand), 1821-1891
- Gregorovius, Ferdinando, 1821-1891
- Gregorovius, Ferdynand, 1821-1891
Geschichte der Stadt Rom im Mittelalter, 1889-1903: title page (von Ferdinand Gregorovius)
Idea polskości, 1991: title page (Ferdynand Gregorovius)
Wikipedia, viewed December 10, 2015 (Ferdinand Gregorovius; born January 19, 1821, in Neidenburg (in East Prussia; now Nidzica in Poland); died May 1, 1891, in Munich, Germany; German historian who specialized in the medieval history of Rome)