In 1841 William Marks, aged about 30, copper miner, and wife Lavinia, aged about 30, were living in Connor Downs, Gwithian, Cornwall
Present were children: Elizabeth (4), William (3), Lavinia (2).
In Feb 1844 William Marks of Gwithian, miner, was granted Administration of the goods and chattels of his father Francis Marks, William's mother Ann Marks having first renounced under her hand and seal.
In 1851 William Marks (39) of Gwithian, Cornwall, farmer of 10 acres, and wife Lavinia (40) of Gwinear were living in Connor Downs, Gwithian, Cornwall. Present were children: Elizabeth Ann (14) of Gwinear, house keeper, William Francis (13) of Gwinear, Lavinia (12) of Gwinear, Francis (10) of Gwithian, Jane Lean (6) of Gwithian, Mary (4) of Gwithian, Thomas (4 months) of Gwithian.
In 1861 William Marks (49) of Gwithian, Cornwall, copper miner, and wife Lavinia (48) of Gwinear, copper miner's wife, were living in Connor Downs, Gwithian, Cornwall. Present were wife children (born in Gwithian: Lavinia (20), copper miner's daughter, Francis (18), copper miner, Jane L. (15), work maid, Marey (13), scholar, Thomas (10), scholar, Ellen (7), scholar, James H. (4), scholar.
In 1871 William Marks (60) of Gwithian, Cornwall, tin miner, and wife Lavnia (59) of Gwinear were living in Marks Corner, Gwithian, Cornwall. Present were children (born in Gwithian): Francis (28), tin miner, Mary (22), works at home, Eliza (17), works at home, James H. (15), farm labourer.
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William Marks of Connor Downs died aged 62 years (burial record).
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The Will of William Marks late of the Parish of Gwithian in the County of Cornwall, miner, who died 10 January 1873 at the said Parish was proved at the Principal Registry on 23 Jul 1873 by Lavinia Marks of Gwithian, widow, the relict and sole executrix. 4