Arthur was the second of three sons of Fred and Eliza Illingworth and worked as a joiner/builder. On 7 June 1918 the Shipley Times & Express reported that his brother Albert had been taken prisoner of war and added some details about Arthur, including the fact that he had been wounded on the first day of the battle of the Somme: He is L Cpl Arthur Illingworth, West Yorkshire Regt, and he enlisted in November 1914. On 1st July 1916 he was wounded, a bullet passing through the left side of his body. On the following Xmas Day he landed at the front again. Just over a month later, on 26 July, the newspaper reported Arthur’s death: On 27th June, Mr and Mrs Fred Illingworth of 60 Briggate, Windhill, received a letter from their son, L Cpl Arthur Illingworth, West Yorkshire Regt, aged 23, stating that he was quite well and all right. On the day it was received he was killed in action. He enlisted in the Bradford Pals in November 1914 at which time he was in the employment of Mr Arthur Parker, joiner and builder, Windhill. He was wounded on 1st July 1916. He was well known as a member of the Windhill Mission Brotherhood and of the Cricket Club. His brother, Pte Albert Illingworth, South Staffordshire Regt., was reported missing on 10th April but was afterwards listed as a prisoner of war in Germany.