« Reply #6 on: Wednesday 13 September 17 21:00 BST (UK) »
free search of 1939 shows a Davies family at 3 Caroline Street, headed by Mary E. Checking the birth regs of children gives a maiden name of Morris, so possibly this marriage
John Davies june qtr 1906 Llanelly vol 11a pg 1793 with Mary Elizabeth Morris on the same page.
and this birth reg
Gwendoline Davies june qtr 1907 Llanelly vol 11a pg 1224 mother's maiden name Morris from GRO index
Cornwall: Allen, Bevan, Bosisto, Carnpezzack, Donithorn, Huddy, James, Retallack, Russell, Vincent, Yeoman
Cards: Thomas (Llanbadarn Fawr)
Glam: Bowler, Cram, Galloway, James, Thomas, Watkins
Lincs: Coupland, Cram
Mon: Cram, Gwyn, John, Philpot, Smart, Watkins
Pembs: Edwards (St. Dogmael's)
Yorks: Airey, Bowler, Elliott, Hare, Hewitt, Kellett, Kemp, Stephenson, Tebb