Thomas Duffield to Edwin Dukes - 1881 Census household returns
- Thomas Duffield to William Duffield
- William Duffield to John Duffill
- John Duffill to Edward Duffin
- Edward Felix Duffin to James Duffin
- James Duffin to Robert Duffin
- Robert Duffin to Frederick Duffitt
- George Duffitt to Elizabeth Duffus
- George Duffus to Rose Duffuss
- John Duffuy to Bernard Duffy
- Bernard Duffy to Charles Duffy
- Charles Duffy to Elizabeth Duffy
- Elizabeth Duffy to Harriet Duffy
- Helen Duffy to James Duffy
- James Duffy to James Duffy
- James Duffy to John Duffy
- John Duffy to John Duffy
- John Duffy to Joseph Duffy
- Joseph Duffy to Mary Duffy
- Mary Duffy to Michael Duffy
- Michael Duffy to Michael Duffy
- Michael Duffy to Patrick Duffy
- Patrick Duffy to Patrick Duffy
- Patrick Duffy to Richard Duffy
- Richard Duffy to Thomas Duffy
- Thomas Duffy to Thomas Duffy
- Thomas Duffy to Constantine Dufner
- Alfred Dufoe to Emma Dufton
- Ephranim Dufton to Samuel Dufton
- Samuel Dufton to Richard Dufty
- Richard Dufty to Jeremiah Dugan
- Johanna Dugan to Frederick J Dugard
- George Dugard to Betsy Dugdale
- Betsy Dugdale to George Dugdale
- George Dugdale to Jane Dugdale
- Jane A Dugdale to John Dugdale
- John Dugdale to Richard Dugdale
- Richard Dugdale to Thomas Dugdale
- Thomas Dugdale to William Dugdale
- William Dugdale to Amelia Duggan
- Andrew Duggan to Edward Duggan
- Edward Duggan to James Duggan
- James Duggan to John Duggan
- John Duggan to Mary A Duggan
- Mary Ann Duggan to Thomas Duggan
- Thomas Duggan to William Duggan
- William Duggan to William Duggin
- William Duggin to Elizabeth Duggleby
- Emma Duggleby to Edward Duglass
- George Duglass to James Dugmore
- John Dugmore to Alexander Duguid
- Alexander Duguid to Isabella Duguid
- Isabella Duguid to Margaret Duguid
- Margaret Duguid to Jane Dugurd
- Alfred Dugwell to James M Duinkirk
- John H Duinkirk to Battye Duke
- Benjamin Duke to Douglas W Duke
- Dowson Duke to Frederick Duke
- Frederick Duke to George Duke
- George Duke to James Duke
- James Duke to John Duke
- John Duke to Joseph Duke
- Joseph Duke to Richard Duke
- Richard Duke to Thomas Duke
- Thomas Duke to William Duke
- William Duke to William H Duke
- William Henry Duke to Edwin Dukes