I doubt that I can make much more progress on this man who came from Tullamore area, joined the British Army, became a prisoner of war in Germany, joined the Irish Brigade that Casement recruited from among the Irish pow's.
The information I have on James Berry Behind the Wire website gives Berry in Leinsters, 2nd Battalion from WO files. His is the medal card shows him as Private 6858 in Leinsters
Keogh (Sgt Major of Irish Brigade) says he comes from Tullamore
6902 Scanlan of Leinster Regt (note this is not the Scanlon in Irish Brigade and who was in Royal Irish Rifles) in a POW debrief, described Berry as "a boy crying with hunger ... who was never seen in Brigade uniform"
There is a James Berry aged 13 in the 1911 census living at Brachnagh, which is 12 miles from Tullamore, and could be him. Or a James Berry aged 18 in the 1911 census living at Durrow, 4 miles from Tullamore
He appears to have stayed in England after the war, as the address given for his medals was at Ellerton, Yorkshire. Ellerton is a village in the East Riding of Yorkshire, 8 mi south west of the market town of Pocklington. Together with Aughton it forms the civil parish of Ellerton and Aughton.
I cannot find a record of the death of a James Berry there. Nor the death of any James Berry of the right sort of age in East Yorkshire.
Anybody any ideas on getting any further with him?