William Isherwood to Edward Isted - 1881 Census household returns
- William Isherwood to William Isherwood
- William Isherwood to William Isherwood
- William Isherwood to Lewis Isiacks
- William Isicks Or Iricks to John Isitt
- John Isitt to Ralph Islay
- Ann Isle to Thomas Isle
- Thomas John Isle to Eliza A Isles
- Elizabeth Isles to Henry Isles
- Henry Isles to John Isles
- John Isles to Peter Isles
- Rebecca Isles to William Isles
- William Isles to Henry Isley
- Hubert Isley to Eliza Islip
- Elizabeth Islip to Walter Islip
- William Islip to John Ismay
- John Ismay to Thomas Ismay
- Thomas Ismay to George Isom
- George Isom to Arthur H Ison
- Benjamin Ison to Frederick Ison
- Frederick Ison to James Ison
- James Ison to Joseph Ison
- Joseph Ison to Stephen Ison
- Thomas Ison to William Ison
- William Ison to Benjamin Israel
- Boaz Israel to Judah Israel
- Judah Israel to Hurt Isreal
- Anne Issaac to Ann Issell
- Clara A Issell to John T Issitt
- Joseph Issitt to Henry Issott
- Henry Issott to John Istance
- Mary Istance to Edward Isted