Arthur Coburn to Louisa Ann Cocks - 1911 Census household returns
- Arthur Coburn to Joseph Coburn
- Joseph Thomas Coburn to William Cocarton
- Maria Louisa Cocburn to Elizabeth Cochran
- Emilie Campbell Cochran to Charles Cochrane
- Charles Cochrane to Harold Cochrane
- Harold M Cochrane to John Cochrane
- John Cochrane to Robert Noble Cochrane
- Robert Penmon Cochrane to William Joseph Cochrane
- William Joseph Cochrane to Charles Cock
- Charles Cock to Fanny Ellen Cock
- Frances Ann Cock to Henry Cock
- Henry Cock to John Cock
- John Cock to Martin Cock
- Martin Osborne Cock to Thomas Cock
- Thomas Cock to William Curling Cock
- William Edward Cock to Andrew Cockart
- Sarah Cockayae to George Cockayne
- George Cockayne to John Walter Cockayne
- John William Cockayne to William Cockayne
- William Cockayne to Albert Cockbill
- Albert Edward Cockbill to Adam Cockburn
- Adam Cockburn to Elizabeth Cockburn
- Elizabeth M T Cockburn to Hilda Elizabeth Howde Cockburn
- Horace Cockburn to John Cockburn
- John Cockburn to Louise Jane Cockburn
- Lucy Cockburn to Robert Clark Cockburn
- Robert Gilmour Cockburn to William Cockburn
- William Cockburn to Arthur Cockcroft
- Arthur Armitage Cockcroft to Harold Cockcroft
- Harold Ernest Cockcroft to John Thomas Cockcroft
- John Thomas Cockcroft to Thomas Cockcroft
- Thomas Cockcroft to Arthur Thomas Cockell
- Arthur Wright Cockell to Robert Cockell
- Ruth Hannah Cockell to Arthur Cocker
- Arthur Cocker to Ernest Cocker
- Ernest Cocker to Henry Cocker
- Henry Cocker to John Cocker
- John Cocker to Joseph Cocker
- Joseph Cocker to Percy Cocker
- Percy Cocker to Thomas Cocker
- Thomas Cocker to William Cocker
- William Cocker to William H Cockeram
- Alfred George Cockeran to Mabel Cockerell
- Margaret J Cockerell to John Cockerham
- John C Cockerham to Benjamin Burdett Cockerill
- Betsy Cockerill to Fred Cockerill
- Fred Teabe Cockerill to Ingram Cockerill
- Isabella Cockerill to Lawrence Cockerill
- Leah Cockerill to Thomas Cockerill
- Thomas Cockerill to William E Cockerill
- William Edward Cockerill to Ernest Edwin Cockersoll
- Pat Cockerson to John Cockerton
- John Cockerton to Alexander Cockett
- Alfred Cockett to Joseph Cockett
- Joseph William Cockett to Philip Cockfield
- Robert Cockfield to Ruth Cockhill
- Thomas Cockhill to J Anns Cockin
- James Cockin to Arthur Cocking
- Arthur Cocking to George Cocking
- George Cocking to John Cocking
- John Cocking to Robert Cocking
- Robert Fenwick Cocking to William Cocking
- William Cocking to Levi Cockings
- Mark Cockings to Daniel Cockle
- Daniel Cockle to Margaret Cockle
- Mark Thomas Cockle to James Cocklin
- James Cocklin to George Cockman
- George Cockman to Alice Cockram
- Alice Cockram to Frank Cockram
- Frank Cockram to John Cockram
- John Cockram to Sidney Cockram
- Sidney Cockram to Walter Cockram
- John Cockram Senr to Gertrude Cockrane
- Hannah Cockrane to Robert W Cockrane
- Roy Cockrane to George Cockrell
- George Martin Cockrell to William James Cockrem
- Ann Miriam Cockren to William Fenwick Cockrill
- William Greenwood Cockrill to Fred Cockroft
- Fred Cockroft to John Cockroft
- John Cockroft to Thomas Cockroft
- Thomas Cockroft to Alice Cocks
- Alice Cocks to Charles Thorpe Cocks
- Charles W Cocks to Florence Ada Cocks
- Florence Annie Cocks to Harold Edgar Cocks
- Harrell Cocks to Jane Elizabeth Cocks
- Jane Winifred Cocks to Louisa Ann Cocks