Name, year and country of birth, from search on New Zealand BDM website in June 2025:
1922/12425. O'Shaughnessy, Eric. Mother: Janet. Father: John

Full date of birth of 7 May 1922 from further searching in June 2025 on BDM Search by incrementally changing the date range for the birth.

Missing in WWII from the New Zealand Herald newspaper of 16 September 1943 found on the Papers Past website in June 2025:
https://paperspast.natlib.govt.nz/newspapers/NZH19430916.2.63
ROLL OF HONOUR
AIR FORCE LOSSES
KILLED AND MISSING
(P.A.) WELLINGTON, Wednesday
The following R.N.Z.A.F. casualties were announced to-day, the rank being sergeant unless otherwise stated: -
O'Shaughnessy, E. (Flt.-Sgt.), missing on operations - Mr. J. O'Shaughnessy. Auckland (father).

Date of birth confirmed, place of birth, date and country of death, place of burial, inscription on headstone, photo of headstone and photo of grave site, from Find a Grave website found in May 2025:
https://www.findagrave.com/memorial/20940773/eric-oshaughnessy
Name: F/S. Eric O'Shaughnessy
Birth: 7 May 1922, Auckland, New Zealand
Death: 3 Aug 1943 (aged 21) Germany
Burial: Hauptfriedhof Ohlsdorf, Ohlsdorf, Hamburg-Nord, Hamburg, Germany
Plot: 10A. K. 4.

Service Number ~ NZ 414889
Military Base ~ Holme-On-Spalding Moor, Yorks
Unit ~ RAF 76 Squadron
Command ~ Bomber Cmnd
Ship ~ Halifax V
Occupation ~ Wireless Operator/Air Gunner
Casualty ~ Killed in action
Residence Place ~ Auckland City, New Zealand
Shot Down Near Hesedorf, 7 Miles South of Zeven During A Raid on Hamburg

Son of John and Janet O'shaughnessy, of Auckland City, New Zealand.
Inscription
414889 Flight Sergeant, E. O'Shaughnessy,
Wireless Operator /Air Gunner
Royal N.Z. Air Force, 3rd August 1943, Age 21