« Reply #56 on: Tuesday 19 May 09 09:42 BST (UK) »
don't forget that the ages in 1841 were rounded down, so Martha is 20 - 24 and could be a daughter of Martha.
It could be that Thomas wasn't registered. You could get Ann's birth cert instead -
Ann Swift june qtr 1848 Shrewsbury vol 118 pg 168
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