
David Orr was born in Ballymena, County Antrim, in 1897, one of five children to William and Annie Orr. William was employed as a railway porter but, when Annie died in the early 1900s, he took on work as a dealer.
By the time of the 1911 census, David, who was now 13 years old, had taken a job as a message boy. War was coming to Europe, however, and he felt it his duty to serve his King and Country.
David joined the Royal Irish Rifles, and was attached to the 18th Battalion. He “was one of the first in [the] district to join the Ulster Division when it was formed in September 1914, and began his training at Cleggan Camp. He was subsequently transferred with his regiment to Clandeboye, where he completed his training…” [Ballymena Weekly Telegraph: Saturday 26th February 1916]
Rifleman Orr’s unit arrived in France on 5th October 1915, but was only overseas for a matter of months.
While serving in the trenches, he was stricken by illness, and was eventually sent back to England and underwent treatment in the 4th London General Hospital, Denmark Hill, and at the Wallace Field Convalescent Home, Croydon. His condition improved somewhat, and he was afterwards transferred to Victoria Barracks, Belfast; but the improvement was, unfortunately, only of a temporary nature…
Ballymena Weekly Telegraph: Saturday 26th February 1916
David Orr passed away on 17th February 1916: he was 18 years of age. He was laid to rest in Ballymena New Cemetery, not far from where his family still lived.

(from britishnewspaperarchive.co.uk)