Name, date of birth of “21 January 1917”, from Muriel Leo’s (nee Oliver, 1917-1998) Family Tree and added her in October 2005.

Preferred name of “Theo”, date of marriage, from letter dated 10 May 1981 to Muriel Leo (nee Oliver) from Theodore hinself, and added here in May 2020.

Year and country of death, different month of February for date of birth, from death search on New Zealand BDM website in June 2020:
2004/4928. Knauf, Theodore David Behrent. Date of birth: 21 February 1917

Full date of death of 25 February 2004 from further searching in June 2020 on BDM Search by incrementally changing the date range for the death.

Country of birth from search on New Zealand BDM website in June 2020:
1917/7211. Knauf, Theodore David Behrent. Mother: Mary May. Father: George John Christopher

Full date of birth of 21 February 1917 from further searching in June 2020 on BDM Search by incrementally changing the date range for the birth.
NOTE: Brian of nzolivers has changed month of birth from January to February.