« Reply #5 on: Thursday 12 April 07 13:17 BST (UK) »
there's a James Dallin aged 21 b. Devon iron miner in Bilton/Bilson Green, East Dean, Glos who seems to fit your man RG9/1755 folio 6 pg 2.
Matilda's birth reg dec qtr 1862 Westbury On Severn vol 6 pg 201
Can't see a marriage for James to Lucy on FreeBmd though.

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