Unknown soldier - Mrs D Croft's donation

This photograph of an unnamed soldier was donated to the Essendon Historical Society in 1981.  The donor was a Mrs D Croft of Mt Alexander Rd, Moonee Ponds, whom I am unable to identify in postal directories.  Another item which she donated has her address recorded as Queensland, so she may have donated material prior to moving interstate.

The back of the photo records the date "April 1915", presumably when the photo was framed.

If I could identify Mrs D Croft it might help in identifying the soldier, who might be a relative of hers or her husband's.    Can anyone help with this? Or recognise the soldier?


Update

Kim of the Spirits of Gallipoli website feels that the photo resembles one she has for a James Henry Croft who died at Gallipoli on 28 April 1915 and is buried or commemorated at the Lone Pine Cemetery.


James had a brother John William Croft who married in 1913 and had children, but I just can't make out a possible Mrs D Croft - yet.  Still looking.   While James was born in Ballarat and enlisted in Kyneton, his brother was living in Kensington in the 1950s, according to the electoral roll, so it does bring them into the local area.