Name, year and country of birth, from search on New Zealand BDM website in June 2025:
1913/1262. O'Shaughnessy, William Peter. Mother: Janet. Father: John

Full date of birth of 13 April 1913 from further searching in June 2025 on BDM Search by incrementally changing the date range for the birth.

New Zealand Electoral Roll - Remuera General Roll 1941, found in June 2025:
O'Shaughnessy, William Peter, 10 Mitchelson Street, S.E.6. tinsmith
O'Shaughnessy, John, 10 Mitchelson Street, S.E.6, labourer [Father]
O'Shaughnessy, Janet, 10 Mitchelson Street, S.E.6, married [Mother]
O'Shaughnessy, Frederick George, 10 Mitchelson Street, S.E.6, labourer [Brother]

Living with parents, as recorded in the August 1941 New Zealand, World War II Ballot List found in June 2025:
396161, O'Shaughnessy, William, solderer, 10 Mitchelson St, Ellerslie, Auckland

Year and country of marriage from search on New Zealand BDM website in June 2025:
1945/4629. Bride: Dorothy Merle Andrew. Groom: William O'Shaughnessy

Full date of marriage of 21 April 1945 from further searching in June 2025 on BDM Search by incrementally changing the date range for the marriage.

Year of death date of cremation, last known address, from New Zealand Cemetery Records found in June 2025:
Name: William Peter O'Shaughnessy
Last Known Residence Address: 6 Tangaroa Road
Last Known Residence Place: Panmure, Auckland
Death Date: 1982
Cremation Date: 19 Jul. 1982
Cemetery: Purewa Cemetery

Country of death, date of birth confirmed, from death search on New Zealand BDM website in June 2025:
1982/40360. O'Shaughnessy, William Peter. Date of birth: 13 April 1913

Full date of death of 15 July 1982 from further searching in June 2025 on BDM Search by incrementally changing the date range for the death.