Johann Georg Klein was born 6 January 1864 in Toowoomba, Queensland, Australia to Christian Klein (c1833-1910) and Catherina Friederike Holzwarth (1844-1907) and died April 1939 of unspecified causes. He married Johanna Louise Reinke (1867-1893) 28 July 1887 in Lutheran Church, Highfields, Queensland, Australia. He married Marie Louise Deuble (1869-1950) 11 October 1893 in Wilhelmshohe, Toowoomba, Queensland, Australia.
Children
| Name | Birth | Death | Joined with |
| William Christy Klein (1888-1891) | |||
| Louisa Florenza Klein (1890-1891) | |||
| George William Klein (1893-1949) | |||
| (unknown) Klein (1893-1893) | |||
| Name | Birth | Death | Joined with |
| Julia Dorothy Deuble Klein (1892-1914) | |||
| Fredrich Adam Klein (1894-1973) | |||
| Jacob Karl Klein (1896-1901) | |||
| Katherina Louisa Klein (1899-1972) | |||
| Leonard Klein (1902-1982) | |||
| Eric Klein (1904-1990) | |||
| Emma Louisa Klein (1907-1998) | |||
| Edna Klein (1909-1999) | |||
Footnotes (including sources)
| ‡ General |
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