| Family Name | Giessen |
| Given Name or Names | George Charles |
| Title and Location of Court | Marin Court N.Y.C. |
| Date of Naturalization | Oct. 15, 1846 |
| Volume | 23 |
| Copy of Record No. | 334 |
| Address of Naturalized Person | N.Y.C. |
| Occupation | |
| Birth Date or Age | |
| Former Nationality | Bavarian |
| Port of Arrival in the United States | |
| Date of Arrival | |
| Names, Addresses and Occupations of Witnesses to Naturalization | Anthony Arent, N.Y.C. |
Source: FamilySearch - New York Naturalization Index (Soundex), 1792-1906