In 1841 Henry Cock (40), copper miner, and wife Sarah (40) were living in Trevarnon. Present were children: Henry (15), Benjamin (12), Sarah (10), Samuel (8), Grace (6), Ann (4), Elizabeth (2), Josiah (1m)
In 1851 Henry Cock (49) of Gwithian, copper miner, and wife Sarah (50) of Gwithian, were living in Trevarnen, Gwithian. With them were children (born in Gwithian): Henry (25), copper miner, Benjamin (22), copper miner, Sarah (20), Samuel (17), cart driver, Grace (15), Ann (13), Elizabeth (11), Josiah (9), scholar
In 1861 Henry Cock (60) of Gwithian, copper ore miner, and wife Sarah (60) of Gwithian, were living in Trevarnon Moor, Gwithian. With them were children (born in Gwithian): Ann (22), work to mine, Elizabeth (20), work to mine, Josiah (19), copper miner
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Henry Cock of Connor Downs died aged 66 years (burial record).