Robert Fitts to John Flamank - 1881 Census household returns
- Robert Fitts to Michael Fitz Patrick
- Peter Fitz Patrick to William Fitze
- William Fitze to Ann Fitzgerald
- Ann Fitzgerald to Charlotte Fitzgerald
- Charlotte G Fitzgerald to Edward Fitzgerald
- Edward Fitzgerald to Frances Fitzgerald
- Francis Fitzgerald to Hester Purcell Fitzgerald
- Hesther Fitzgerald to James Fitzgerald
- James Fitzgerald to John Fitzgerald
- John Fitzgerald to John Fitzgerald
- John Fitzgerald to John Fitzgerald
- John Fitzgerald to Kate Fitzgerald
- Kate Fitzgerald to Mary Fitzgerald
- Mary Fitzgerald to Michael Fitzgerald
- Michael Fitzgerald to Patrick Fitzgerald
- Patrick Fitzgerald to Rosa Fitzgerald
- Samuel Fitzgerald to Thomas Fitzgerald
- Thomas Fitzgerald to William Fitzgerald
- William Fitzgerald to William Fitzgerald
- William Fitzgerald to John Fitzgibbon
- John Fitzgibbon to Patrick Fitzgibbons
- Thomas Fitzgibbons to Charles Fitzhugh
- Charles Fitzhugh to William Fitzhugh
- William Fitzhugh to Elizabeth Fitzjohn
- Francis Fitzjohn to Thomas Fitzjohn
- Thomas Fitzjohn to Patrick Fitzmaurice
- Patrick Fitzmaurice to Ann Fitzpatrick
- Ann Fitzpatrick to Christopher Fitzpatrick
- Cornelius Fitzpatrick to Elizabeth Fitzpatrick
- Elizabeth Fitzpatrick to Hugh Fitzpatrick
- Hugh Fitzpatrick to James Fitzpatrick
- James Fitzpatrick to John Fitzpatrick
- John Fitzpatrick to John Fitzpatrick
- John Fitzpatrick to Joseph Fitzpatrick
- Joseph Fitzpatrick to Mary Fitzpatrick
- Mary Fitzpatrick to Michael Fitzpatrick
- Michael Fitzpatrick to Patrick Fitzpatrick
- Patrick Fitzpatrick to Robert Fitzpatrick
- Robert Fitzpatrick to Thomas Fitzpatrick
- Thomas Fitzpatrick to William Fitzpatricke
- William Fitzpatricks to Daniel Fitzsimmons
- Edward Fitzsimmons to Mary Fitzsimmons
- Mathew Fitzsimmons to James Fitzsimon
- John Fitzsimon to John Fitzsimons
- John Fitzsimons to Warren Fitzwarren
- Arthur Fitzwater to Henry Fiveash
- James Fiveash to Charlotte Fizard
- Jane Fize to Arthur Flack
- Arthur Flack to Edward Flack
- Edward J Flack to George Flack
- George D Flack to James Flack
- James Flack to Joseph Flack
- Joseph Flack to Robert Flack
- Robert Flack to William Flack
- William Flack to James Flackney
- Mary Flackney to William M Flagg
- Stephen Flaggett to Dennis Flaherty
- Dominick Flaherty to Martin Flaherty
- Martin Flaherty to Thomas Flaherty
- Thomas Flaherty to John Flamank