Grietje Posthuma
| Sex: | Female | |
| Father: | Jan Frederik Posthuma | |
| Mother: | Freerkje Jans van der Schaaff | |
| Birth: | 9 May 1838 | Dokkum, FR, NL |
| Death: | 16 Jul 1905 | Groningen, GR, NL |
| Sex: | Female | |
| Father: | Jan Frederik Posthuma | |
| Mother: | Freerkje Jans van der Schaaff | |
| Birth: | 9 May 1838 | Dokkum, FR, NL |
| Death: | 16 Jul 1905 | Groningen, GR, NL |