Name, year and country of birth, from search on New Zealand BDM website in June 2025:
1910/2190. O'Shaughnessy, Frederick George. Mother: Janet. Father: John

Full date of birth of 1 June 1910 from further searching in June 2025 on BDM Search by incrementally changing the date range for the birth.

New Zealand Electoral Roll - Parnell Supplementary Roll 1931, found in June 2025:
O'Shaughnessy, Frederick George, 10 Mitchelson Street, labourer
O'Shaughnessy, John, 10 Mitchelson Street, labourer [Father]
O'Shaughnessy, Janet, 10 Mitchelson Street, married [Mother]

New Zealand Electoral Roll - Parnell General Roll 1935, found in June 2025:
O'Shaughnessy, Frederick George, 10 Mitchelson Street, labourer
O'Shaughnessy, John, 10 Mitchelson Street, labourer [Father]
O'Shaughnessy, Janet, 10 Mitchelson Street, married [Mother]
O'Shaughnessy, William Peter, 10 Mitchelson Street, S.E.6. tinsmith [Brother]

New Zealand Electoral Roll - Remuera Supplementary Roll 1938, found in June 2025:
O'Shaughnessy, Frederick George, 10 Mitchelson Street, S.E.6, labourer

Entry in the November 1940 New Zealand, World War II Ballot List found in June 2015:
286681 O'Shaughnessy, Frederick George, Hotel-porter, care of Brents Ltd., Rotorua

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

New Zealand Electoral Roll - Remuera General Roll 1943, found in June 2025:
O'Shaughnessy, Frederick George, 10 Mitchelson Street, S.E.6, labourer
O'Shaughnessy, John, 10 Mitchelson Street, S.E.6, labourer [Father]
O'Shaughnessy, Janet, 10 Mitchelson Street, S.E.6, married [Mother]
O'Shaughnessy, William, 10 Mitchelson Street, S.E.6, tinsmith [Brother]

Year and country of marriage from search on New Zealand BDM website in June 2025:
1943/350. Bride: Kathleen Martha Telford. Groom: Frederick George O'Shaughnessy

Full date of marriage of 28 January 1943 from further searching in June 2025 on BDM Search by incrementally changing the date range for the marriage.

New Zealand Electoral Roll - Onehunga Main Roll 1949, found in June 2025:
O'Shaughnessy, Frederick George, 4 Renmark Flats, W.1., barman
O'Shaughnessy, Kathleen Martha. 4 Renmark Flats, W.1., married

New Zealand Electoral Roll - Onehunga Main Roll 1966, found in June 2025:
O'Shaughnessy, Frederick G. 10 Carrs Pl. SE6, barman
O'Shaughnessy, Kathleen M. 10 Carrs Pl. SE6, telephst

New Zealand Electoral Roll - Onehunga Main Roll 1966, found in June 2025:
O'Shaughnessy, Frederick G. 10 Carrs Place, Storeman
O'Shaughnessy, Kathleen M. 10 Carrs Place, Married

Date of death, date of cremation, found from Auckland Council cemetery search in June 2025:
Name: Frederick George O'shaughnessy
Date of birth: Unknown
Occupation: Retired
Date of death: 13 March 1990
Age at death: 79 years
Gender: Not recorded
Region: South
Cemetery name: Manukau Memorial Gardens
Remains type: Ash
Date of cremation: 16 March 1990
Funeral director: Funeral Directors Auckland Ltd