Thomas Cotter was the son of William and Mary Jane Cotter. Thomas was born about 1886. The CWGC defines his birthplace as Aughnacloy, County Tyrone. Ireland’s Memorial Records Book records his birthplace as Armagh. The 1901 census records his birthplace as Belfast. Sapper Thomas Cotter served with the ‘M Company’ of the Royal Engineers. He died at home on 29th January 1918. He was aged 32. He was the husband of Mary Ann Cotter.