In 1701 William became a beneficiary of his father's will, receiving £10. 
  
In 1721 William Cock was co-executor and a residuary legatee of his mother's will.
  In 1757 William Cock was present at the marriage of his son Roger Cock to Elizabeth Harris in Gwithian.
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  Abstract of the Will of William Cock of the Parish of Gwithian in the County of Cornwall, Yeoman, written 23 Jan 1762, proved 17 May 1762. 2
  Gives to his wife Alice an annuity of £6, her bed and bedding, the profits from a milk cow on his estate in Connerton, and other items.
  Gives £15 to his daughter Jane Petherick. 
  Gives £15 to his daughter Mary Clements.
  Gives £15 to his daughter Alice Davey.
  Gives £15 to his daughter Anne Cock.
  Gives to each of his grandchildren a ewe lamb or 2 shillings.
  All the rest of his effects and estate he gives to his sons John Cock and Roger Cock, appointing them co-executors of his last will and testament.
  (his sign)
  Witnesses: Richard Hockin, Roger Cock