David Thomas, Mercantile Marine. David was born on 29 May 1893, the son of John and Mary Ann Thomas, of Tegfan, Cross Inn, Synod Inn, Ceredigion, Wales. He served with the Merchant Navy aboard the SS Treglisson, a 2,512 tonne cargo steamer. At the outbreak of war, Treglisson was detained by the Germans at Bremen and used as a prison ship between 1914 and 1919, her crew being interned in Prisoner of War camps in Germany for the duration. After the war, she was returned to her owners.
David died as a Prisoner of War in Germany on 7 May 1917, aged 23, and is buried in Ruhelben, Germany.