Biography
William John Koch was born 4 May 1897 in Steinbrook, Tenterfield, New South Wales, Australia to John Koch (1866-1934) and Annie Mulherin (1869-1937) and died 9 October 1959 Dalby, Queensland, Australia of unspecified causes. He married Ada Adeline Curd (1902-1982) 31 December 1928 in Mingoola, Tenterfield, New South Wales, Australia.
Children
| Name | Birth | Death | Joined with |
| Colin John Koch (1929-2011) | |||
| Cynthia Olive Mary Koch (1931-2001) | 10 June 1931 Mingoola, Tenterfield, New South Wales, Australia | September 2001 Dalby, Queensland, Australia | |
| Valeia Ann Koch (1934-) | |||
| Vernon Charles Koch (1936-1939) | |||
| William Alfred Thomas Koch (1942-1948) | |||
| David Patrick Koch (1944-2006) | |||
Footnotes (including sources)
| ‡ General |
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