« Reply #11 on: Tuesday 29 April 08 13:40 BST (UK) »
John's family in 1841?
Kea HO107/147/13 folio 39 pg 17
Isaac Martin 35 copper miner
Ann 40
John 15 copper miner
Isaac 10
Mary 3
enumerated next to
Alice Datson 45
Mary Datson 40
John bp 26/3/1826 son of Isaac Martin & Ann at Kea
Isaac Martin married Ann Datson at Kea 18/11/1825
There is another John Martin in Kea in 1824, but this would seem the more likely one given one of his sons is called Isaac.
Parents plus younger children are in Lancashire in 1871 RG10/4247 folio 70 pg 13, Olivia enumerated as Leviow.

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