John Blackett, a miner, probably born around 1830, appears in the 1861 and 1871 censuses with his family. In those censuses his place of birth is shown as Darlington, Co. Durham. In the 1881 and 1891 censuses, however, his place of birth is shown as Crook, about 16 miles to the north-west. He died in 1894 at Chester Moor, Chester-le-Street, aged 62.
No baptism around the relevant time has been found for this John Blackett in either Crook or Darlington and John has not been found in the 1841 and 1851 censuses.
For a descendancy chart of John Blackett please click here.