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The regimental War Diaries are held at The UK National Archives and as of April 2020 have been made available for free download*. They are the official unit war diaries for the British Army that contain records of daily activities, including casualties. They are not personal diaries.
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Major John Simon Lewis
Date of death: 18/11/1916 (aged 42)
Cemetery: BAPAUME POST MILITARY CEMETERY, ALBERT
Son of John Simon Lewis and Harriet Boyle Lewis.
Private David Lewis
Date of death: 26/09/1916 (aged 25)
Cemetery: VIMY MEMORIAL
Son of B. R. and Margaret Lewis, of Golm Fryn, Llandre, Cardiganshire, Wales.