| Gruel, Adolph Christian | 1901 | Bremen | |
| Gruel, August | 1902 | Bremen 1 | |
| Gruel, Carl Ernst Anton | 1908 | Bremen 1 | |
| Gruel, Elise | 1890 | Bremen | |
| Gruel, Gertrud Auguste Gesine | 1933 | Bremen 1 | |
| Gruel, Henriette Sophie | 1920 | Bremen 1 | |
| Gruel, Hildegard Anna Kath. | 1927 | Bremen 1 | |
| Gruel, Johannes Friedrich | 1903 | Bremen 1 | |
| Gruel, Karla Dora Marie | 1935 | Bremen 1 | |
| Gruel, Käthchen Anna Adelheid | 1933 | Bremen 1 | |
| Gruel, Klara Juliana | 1933 | Bremen 1 | |
| Gruel, Lloyd Werner | 1939 | Freie Hansestadt Bremen | |
| Gruel, Martha Helene Louise | 1921 | Bremen 1 |