First given name from birth search for son on New Zealand BDM website in June 2025:
1906/17804. Holt, John Henry. Mother: Mary. Father: Alfred Thomas

Burial details from Waikumete Cemetery record found in June 2025:
Catholic C, Row 22:
HOLT, Mary - Buried 8.3.1938, Plot 2
HOLT, Patricia Phylis - Buried 26.4.1940, Plot 2
HOLT, John Henry - Buried 15.11.1966, Plot 2/4