| ORMSBY, Margaret Gladys May | B. 1897 | D. 1953 | ||
| ORMSBY, Mathew Charles | B. 1880 | |||
| ORMSBY, Sydney Ross | B. 1905 | D. 1964 | ||
| ORMSBY, Thomas | B. 10 AUG 1873 | D. 17 FEB 1943 | ||
| ORMSBY, William Claude | B. 1899 | D. 1970 | ||
| ORPEN, Mary Ann | B. 1849 | |||
| ORR, Charles Manning | B. 28 AUG 1884 (Paddington, New South Wales) | D. 1921 (Sydney, New South Wales) | ||
| ORR, Frederick William | ||||
| ORSMOND, Elizabeth | ||||
| ORTEL, Elisabeth Frederike | B. 1800 (Celle) | |||
| ORTLEPP | ||||
| OSBORNE | ||||
| OSBORNE | ||||
| OSBORNE | ||||
| OSBORNE |
| OSBORNE | ||||
| OSBORNE | ||||
| OSBORNE | ||||
| OSBORNE | ||||
| OSBORNE, Annie | B. 1887 | |||
| OSBORNE, Arnold Henry | B. 1907 | |||
| OSBORNE, Dulcie May | B. 1903 | |||
| OSBORNE, Elizabeth Fanny Maria | B. 1883 | |||
| OSBORNE, Ella Joyce Millicent | ||||
| OSBORNE, Elsie Hillman | B. 12 JUL 1878 (Kent Town, South Australia) | |||
| OSBORNE, Florence Julia | B. 26 SEP 1880 (Kent Town, South Australia) | |||
| OSBORNE, Henry | B. 1845 | |||
| OSBORNE, Herbert John | B. 28 OCT 1876 (Kent Town, South Australia) | |||
| OSBORNE, John Robert | B. 1878 | D. 1945 | ||
| OSBORNE, Mary |
| OSBORNE, Michael | ||||
| OSBORNE, Ralph Claude | B. 1901 | D. 1977 | ||
| OSBORNE, William | ||||
| OSBORNE, William Henry | B. 26 JUN 1869 (Yankalilla, South Australia) | D. 12 JUN 1950 (Edithburgh, South Australia) | ||
| OSBURN, Martha Lydia | B. 24 JUL 1882 | D. 1958 | ||
| OSKAR, John | ||||
| OSKAR, Mary Elizabeth | B. 4 DEC 1875 | D. 1943 | ||
| OSMAN, Agnes Elizabeth | B. 1844 (England) | D. 6 JAN 1905 (Norwood, South Australia) | ||
| OSTEN, Caspar | B. 1570 | |||
| OSTEN, Lucia | B. 1603 | |||
| OSTER, Agnes Louise | B. 1882 | |||
| OSTER, Amalie Lydia | B. 1831 | D. 1838 | ||
| OSTER, Amelia Bertha | B. 1865 | D. 1867 | ||
| OSTER, Anna Victoria | B. 8 JUL 1839 (Metz, Lorraine, France) | D. 15 FEB 1917 (Adelaide, South Australia) | ||
| OSTER, Anna Victoria Minna | B. 1877 | D. 1971 |
| OSTER, Clara Pauline Renate | B. 10 JAN 1874 (Rosenthal, South Australia) | D. 13 NOV 1966 | ||
| OSTER, Emma Mathilde | B. 1860 | D. 1896 | ||
| OSTER, Fanny Emma | B. 1834 | D. 1843 | ||
| OSTER, Friedrich Theodor | B. 1862 | D. 1867 | ||
| OSTER, Gotthard Daniel | B. 1871 | D. 1957 | ||
| OSTER, Hulda Emilie | B. 1867 | D. 1953 | ||
| OSTER, Johann Theobald | ||||
| OSTER, Ottilie Helene | B. 1869 | D. 1956 | ||
| OSTER, Paul Martin | B. 1836 | D. 1836 | ||
| OSTER, Pauline Renata | B. 6 SEP 1837 (Metz, Lorraine, France) | D. 7 SEP 1917 (South Kilkerren, South Australia) | ||
| OSTER, Philipp Jacob Jacques | B. 6 MAR 1804 (Alsace-Lorraine, France) | D. 25 OCT 1847 (at sea) | ||
| OSTER, Phillip Jacob | B. 16 FEB 1830 (Strasbourg, Alsace-Lorraine, France) | D. 15 JUL 1897 (Rosenthal, South Australia) | ||
| OSTER, Phillip Jacob | B. 1858 | D. 1925 | ||
| OSTERBURG, Maria Regine | B. ABT 1848 | |||
| OSTERMEIER, Sophia Marie | B. OCT 1760 (Nordsehl) | D. 12 AUG 1803 (Kirchhorsten, Schaumburg-Lippe) |
| OSWALD, Christine | B. 1 JUN 1617 | |||
| OTT, Bernard J | ||||
| OTT, John | ||||
| OTTE, Christina | B. ABT 1550 | |||
| OTTE, Frieda | B. 1885 (Bockelskamp, Germany) | |||
| OTTE, Georgine Karoline Emma | ||||
| OTTEMANN, Anna Magdelena | ||||
| OTTEMANN, Zacharias | ||||
| OTTENS, Carl Alfred | B. 26 OCT 1880 (Condowie, South Australia) | D. 1957 | ||
| OTTENS, Claus | B. 1841 | D. 1914 | ||
| OTTENS, Claus Christian Theodor | B. 17 FEB 1890 (Condowie, South Australia) | D. 19 MAR 1966 | ||
| OTTO | ||||
| OTTO | ||||
| OTTO, Johann Wilhelm | ||||
| OTTO, Johanne Caroline Louise | B. 13 MAR 1873 (Kanmantoo, South Australia) | D. 25 AUG 1961 (Queenstown, South Australia) |