- Category : 1855-births
- Type : GP
- Profile : 3/6 - Martyr / Role Model
- Definition : Split - Small (48)
- Incarnation Cross : RAX Laws 1
German historian whose research focus was historical geography. His main works are the historical atlas Atlas Antiquus: Atlas of the history of antiquity (six editions, 1893-1909) and a historical school atlas. His oldest brother was the entrepreneur and arts patron Ernst von Sieglin. He died on 9 July 1935 in Hofgastein (today Bad Hofgastein) at age 80.