« Reply #1 on: Monday 07 July 08 21:30 BST (UK) »
there's a possible in South Petherwin 19/9/1836 John Laurence to Martha Prideaux
Possible baptism for Martha in Egloskerry 20/12/1818 in Egloskerry to Richard & Ann Prideaux.
Same couple had previously baptised a daughter Martha In November 1815, but there's also a burial for her in December the same year.
Does this date tie in with what you have?

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