Portrait of an unidentified soldier and two unidentified women [inscribed Banks]

Portrait of a New Zealand soldier in the uniform of a Rifleman  in the Rifle Brigade, standing between two women, one seated and one standing. The older woman may be his mother, the younger may be a sister. Of the five New Zealand soldiers with the surname 'Banks' who served in the Rifle Brigade during WW1, we believe the man depicted in the photograph is most likely to be one of the following:

1/359 John Lindsay Banks, labourer, enlistment address c/- Mrs Ready, 49 Jackson St., Petone, next of kin: Mrs John L Banks (mother), Hamilton, Miss C. Banks (sister), c/- Post Office, Petone. He embarked from Wellington on 15 August 1914 with the Samoa Advance Party, and again on 16 October 1916 with the 12th Reinforcements.

54454 James Banks, labourer, next of kin: Miss C. Banks (sister), 6 Islington St., Petone, he embarked from Wellington 14 July 1917 with 'H' Company, 28th  Reinforcements, NZ Rifle Brigade.

23/1936 Leonard Rye Banks, upholsterer, next of kin Mrs S L Banks (mother), 60 Niblett St., Wanganui. He embarked from Wellington 4 March 1916 with 4th Reinforcements, NZ Rifle Brigade.

I know who this is