Richard Duckworth to Thomas Duffield - 1881 Census household returns
- Richard Duckworth to Russell Duckworth
- Samuel Duckworth to Thomas Duckworth
- Thomas Duckworth to Thomas C Duckworth
- Thomas H Duckworth to William Duckworth
- William Duckworth to William Duckworth
- William Duckworth to James Dudbin
- Alfred Dudbridge to William Duddenham
- William Henry Dudder to Phoebe Ann Dudding
- Rebecca Dudding to William J Duddleston
- Elizabeth Duddlestone to William J H Duddridge
- Robert Duddrig to Alfred Dudeney
- Alvan B Dudeney to Georgina Dudgan
- Sarah Dudgard to John Dudgeon
- John Dudgeon to William Dudgeon
- William Dudgeon to Ann Dudley
- Anne Dudley to Daniel Dudley
- Daniel Dudley to Emily Dudley
- Emma Dudley to George Dudley
- George Dudley to Isaac Dudley
- Isaac Dudley to Jesse Dudley
- Jesse Dudley to John Dudley
- John Dudley to Joseph Dudley
- Joseph Dudley to Mary Dudley
- Mary Dudley to Robert Dudley
- Robert Dudley to Thomas Dudley
- Thomas Dudley to Thomas Dudley
- Thomas Dudley to William Dudley
- William Dudley to William J Dudley
- William L Dudley to Fred John Dudman
- Fredrick Dudman to William Dudman
- William Dudman to John Dudson
- John Dudson to Henry Duell
- Henry Duell to Charles Duerden
- Charles Duerden to Jane Duerden
- Jane Duerden to Richard Duerden
- Richard Duerden to William Duerden
- William Duerden to John Dueuce
- John Dueur to Alexander Duff
- Alexander Duff to Ann Duff
- Ann Duff to Daniel Duff
- Daniel Duff to Edward Duff
- Edward Duff to George Duff
- George Duff to Isabella Duff
- Isabella Duff to James Duff
- James Duff to Jane Duff
- Jane Duff to John Duff
- John Duff to John Duff
- John Duff to Joseph Duff
- Joseph Duff to Mary Duff
- Mary Duff to Robert Duff
- Robert Duff to Stephen Duff
- Stewart Kirkwood Duff to William Duff
- William Duff to William Duff
- William Duff to George Duffell
- George Duffell to Charlotte Dufferin
- Eliza Dufferin to Phillip Duffett
- Reuben Duffett to James Duffey
- James Duffey to Mary Duffey
- Mary Duffey to Thomas Dufficy
- Agnes Duffie to Arthur Duffield
- Arthur G Duffield to Edwin Duffield
- Elisabeth Duffield to George Duffield
- George Duffield to James Duffield
- James Duffield to John Thos Duffield
- John W Duffield to Richard Duffield
- Richard Duffield to Thomas Duffield