There is a John James Boyde in the Commonwealth War Graves Commission website (www.cwgc.org):

Name: Boyde, John James
Initials: J J
Nationality: Australian
Rank: Private
Regiment/Service: Australian Infantry, A.I.F.
Unit Text: 51st Bn.
Age: 29
Date of Death 27/09/1917
Service No. 5352
Additional Information: Son of Martha Kelly, of Ballamore Cottage, Ballaugh, Isle of Man
Casualty Type: Commonwealth War Dead
Grave/Memorial Reference: XXIV. G. 3.
Cemetery: LIJSSENTHOEK MILITARY CEMETERY

Inscription:
In Memory of
Private JOHN JAMES BOYDE

5352, 51st Bn., Australian Infantry, A.I.F.
who died age 29
on 27 September 1917
Son of Martha Kelly, of Ballamore Cottage, Ballaugh, Isle of Man.
Remembered with honour
LIJSSENTHOEK MILITARY CEMETERY

http://www.cwgc.org/search/certificate.aspx?casualty=430900