FWIW, a quick google search on AWH Harlow shows he was the vicar of St. Michael's Church, Middlewich, Cheshire.
and this;
Order of Battle 1st Airborne DivisionHEADQUARTER FIRST AIRBORNE DIVISION
GOC Major-General R.E. Urquhart DSO
GSO 3 (CW) Captain P.C.A. Sommerville(Royal Armoured Corps)
ADC Captain G.Chatfield- Roberts(Royal Fusiliers)
GSO 1 (Ops) Lieutenant-Colonel C.B. Mackenzie
GSO 2 (Ops)Major O.F. Newton-Dunn
GSO 3 (Ops)Captain D.G. Grieve
GSO 2 (Air) Major D.J. Madden
GSO 3 (Air) Captain D.W. McCombe
GSO 2 (int) Major H.P. Maguire
GSO 3 (int) Captain C.P. Scott-Malden
Intelligence Officer Captain P.A.H. Hodgeson
AA & OMC Lieutenant-Colonel P.H.H.H. Preston(South Lancs. Regiment)
DAAG Major L.K. Hardman(RA)
S.C.F. Reverand Major HarlowRegimental Sergeant Major W.O.I H. Hill
Sergeant Major Medical ServicesW.O.II H.W. Evans
DAQMG Major E.R. Hodges(RASC)
RAChD
SCF Major A.W.H. HarlowThere's also an entry showing he was DSO.
And if it turns out be be the same person, this may be telling;
http://mappingouranzacs.naa.gov.au/file-view.html?b=4968948&s=B2455&c=HARLOW%20A%20W%20Has it indicates he was actually an Anzac - thus the suggestion his mother lodge may be down under is a distinct possibility.
I can see why you're researching him!