| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | List of Bishops of Hildesheim - Bishops of Hildesheim till 1235 |  |  |  |  |
| 3 | Name | From | To | - | Remarks |
| 4 | Gunthar | 815 | 834 | - | - |
| 5 | Rembert | 834 | 835 | - | - |
| 6 | Ebbo | 835 | 847 | - | Archbishop of Reims 816–835 |
| 7 | Altfrid | 847 | 874 | - | - |
| 8 | Ludolf | 874 | 874 | - | - |
| 9 | Marquard | 874 | 880 | - | - |
| 10 | Wigbert | 880 | 908 | - | - |
| 11 | Waldbert | 908 | 919 | - | - |
| 12 | Sehard | 919 | 928 | - | - |
| 13 | Diethard | 928 | 954 | - | - |
| 14 | Otwin | 954 | 984 | - | - |
| 15 | Osdag | 985 | 989 | - | - |
| 16 | Gerdag | 990 | 992 | - | - |
| 17 | Bernward | 993 | 1022 | - | - |
| 18 | Godehard | 1022 | 1038 | Hildesheim-Bernward-Dom-Hildesia.JPG | - |
| 19 | Thietmar | 1038 | 1044 | - | - |
| 20 | Azelin | 1044 | 1054 | - | - |
| 21 | Hezilo | 1054 | 1079 | - | - |
| 22 | Udo of Gleichen-Rheinhausen | 1079 | 1114 | - | - |
| 23 | Bruning | 1115 | 1119 | - | canonically irregular, not consecrated but imperially invested |
| 24 | Berthold I of Alvensleben | 1119 | 1130 | - | - |
| 25 | Bernard I | 1130 | 1153 | - | - |
| 26 | Bruno | 1153 | 1161 | - | - |
| 27 | Herrmann of Wennerde | 1162 | 1170 | - | - |
| 28 | Adelog of Dorstadt | 1171 | 1190 | - | - |
| 29 | Berno | 1190 | 1194 | - | - |
| 30 | Conrad I of Querfurt | 1194 | 1199 | - | Prince-Bishop of Würzburg 1198–1202 |
| 31 | Heribert of Dahlem | 1199 | 1216 | - | - |
| 32 | Siegfried I of Lichtenberg | 1216 | 1221 | - | - |
| 33 | Conrad II of Reisenberg | 1221 | 1246 | - | - |

Question: When was Altfrid the Bishop of Hildesheim?
Answer: Altfrid was the Bishop of Hildesheim from 847 to 874.