From my 'For Your Tomorrow - A record of New Zealanders who have died while serving with the RNZAF and Allied Air Services since 1915 (Volume Three: Biographies & Appendices)':
ROBERTSON, Sergeant Evan Bertram Te Makahi.
NZ404556; b Fairlie 19 Jan 12; Fairlie DHS; meat inspector - Agriculture Dept, Palm Nth. RNZAF Levin/GTS as Air Observer u/t 24 Nov 40, emb for Canada 6 Jan 41, att RCAF 23 Jan 41, 4AOS c.26 Jan 41, 4BGS 13 Apr 41, Air Observers Badge & Sgt & 1ANS 26 May 41, 1 M Depôt 30 Jun 41, att RAF & emb for UK c.6 Jul 41, 3PRC 29 Jul 41, 25OTU (Wellington, Hampden) 11 Aug 41, 408 Sqn RCAF (Hampden- 2 ops) 21 [27?] Oct 41, kao 9 Nov 41. Westkerke Churchyard - grave 2, West Flanders, Belgium. Son of William Alexander & Sarah Jane Robertson (née Sherburd), Fairlie. [phot. TWN 10.12.41].
And fate info per Vol One:
Sun 9/Mon 10 Nov 1941
Raid on Ostend, Belgium (by 9 aircraft - 1 lost)
408 Squadron, RCAF (Syerston, Nottinghamshire - 5 Group)
Hampden I AE438/N - took off at 1755 captained by Plt Off J C Wilson, RCAF, and brought down over Belgium, crashing near Westkerke, 9km SE of Ostend. All four crew are buried at Westkerke.
Observer: NZ404556 Sgt Evan Bertram Te Makahi ROBERTSON, RNZAF - Age 29. 183hrs. 2nd op.
Also Amendment from Vol Three:
p154; ROBERTSON, E B Te M – shot down by a flak battery at Ettelgem/Ostend and crashed on the farm of Mr Vandekerckhove along the Zeeweg of Westkerke.