The following sources have potential matches based on the name and other information associated with this record. They may or may not be connected to this person but are provided for your further research
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.
* you will need to register for an account and login to get access to the downloads. When following the link from any record be sure to make a note of the page number. You will then have to download the full diary in pdf format and search for the respective page and hence entry.
Private Archibald Trevellyn Williams
Date of death: 08/09/1916 (aged 23)
Cemetery: SERRE ROAD CEMETERY No.2
Son of Sarah Williams, of 9, Longford Crescent, St. Thomas, Swansea, and the late G. A. Williams.
Private Brinley Williams
Date of death: 19/05/1916 (aged 21)
Cemetery: ROYAL IRISH RIFLES GRAVEYARD, LAVENTIE
Son of William and Margaret Williams, of 11, Longford Crescent, Swansea.
Skipper Duncan Campbell Mclachlan
Royal Naval Reserve, HM Trawler Othello II
Date of death: 31/10/1915 (aged 37)
Cemetery: PLYMOUTH NAVAL MEMORIAL
Son of Hugh and Agnes McLachlan. of Kinning Park, Glasgow; husband of Ruth McLachlan, of 4, Middleton Street, St. Thomas, Swansea.