Douglas Thomas Old
- Born: 5 Aug 1909, Midhurst, , , New Zealand
- Marriage (1): Maureen Sylvia Williams on 6 Aug 1936 in Eltham, , , New Zealand
- Died: 14 Jul 1973, Green Lane Hospital, Auckland, New Zealand at age 63
Noted events in his life were:
• He resided at Went to live in Morrinsville just before Thomas Old, (father) died. before 23 Jun 1939.
• Christened: Stratford Methodist Chuch, Stratford, Taranaki, New Zealand, 12 Sep 1909.
Douglas married Maureen Sylvia Williams on 6 Aug 1936 in Eltham, , , New Zealand. (Maureen Sylvia Williams was born in 1914 and died in 1983 in Wanganui, New Zealand.)