Name from birth search of son on New Zealand BDM website in June 2025:
1931/25212. McGregor, Gregor. Mother: Ada. Father: Eric Watkins

Year and country of marriage from search on New Zealand BDM website in June 2025:
1929/9601. Bride: Ada Ramsbottom. Groom: Eric Watkins McGregor

Full date of marriage of 11 February 1929 from further searching in June 2025 on BDM Search by incrementally changing the date range for the marriage.

Date of birth and death, place of burial, photo of headstone, from Find a Grave website found in June 2025:
https://www.findagrave.com/memorial/237821669/eric_watkins-mcgregor
Name: Eric Watkins McGregor
Birth: 5 Dec 1898
Death: 9 Jul 1979 (aged 80)
Burial: Matarawa Presbyterian Cemetery, Whanganui, Whanganui District, Manawatū-Whanganui, New Zealand