The Commonwealth War Graves Commission has this entry:
In Memory of:
Herbert James Lavallin, Lieutenant 62829 Quartermaster 4th Battalion, Welch Regiment who died on Tuesday, 16 Jan 1940. Age 49.
Son of Michael and Kate Lavallin; husband of Elizabeth Margaret Lavallin.
Cemetery: Lanelli (Box ) Cemetery Carmarthenshire, UK Sec. 3, Row 6, Grave 35.
This location is on the Swansea Road, which was opened in 1850. It was originally a Nonconformist cemetery, and it still belongs to Trustees appointed by the local Nonconformist Churches. It covers more than eight acres.
A second page entitled:
Record of Commemoration
repeats this information in part.
in order to view the attractive memorial.
Hope this post makes it.
Louie Franklin Turner
And please note, I haven't sought out the Gorman subject. The only other Lavallin listed was in the Navy.