Name of “Margaret Annie Sinclair MacDonald”, year of birth, date and country of death, place of burial, photo of headstone, from Find a Grave website found in June 2025:
https://www.findagrave.com/memorial/110113161/margaret_annie_sinclair-graydon
Name: Margaret Annie Sinclair Graydon (nee MacDonald)
Birth: 1899
Death: 27 Apr 1978 (aged 78–79), New Zealand
Burial: Waikumete Cemetery & Crematorium, Glen Eden, Auckland Council, Auckland, New Zealand
Plot: NONCONFORMIST DIVISION D Row 10, Plot 22

Year and country of birth, parent’s names, from search on New Zealand BDM website in June 2025:
1899/7491. Macdonald, Margaret Annie Sinclair. Mother: Annie Marian. Father: Hugh Fraser

Full date of birth of 10 July 1899 from further searching in June 2025 on BDM Search by incrementally changing the date range for the birth.

Year of marriage of “1927” from online record of New Zealand Marriage Index, found in June 2025.

New Zealand Electoral Roll - Mt. Albert General Roll 1954, found in June 2025:
Graydon, Margaret Annie Sinclair, 185 Mt. Albert Rd., SW2, married (R)
Graydon, Gordon Percival, 185 Mt. Albert Rd., SW2, tunneller (R)
Graydon, Allan Ralph, 185 Mt. Albert Rd., SW2, printer (R) [Son]
Graydon, Dean Gordon, 185 Mt. Albert Rd., SW2, linesman (R) [Son]