William Illingworth to Andrew Imrie - 1881 Census household returns
- William Illingworth to William Hy Illingworth
- William Hy Illingworth to James Illman
- James Illman to John Illsey
- Alexander Illsley to George Illsley
- George Illsley to John Illsley
- John Illsley to Thomas Illsley
- Thomas Illsley to Charles Illston
- David Illston to Alexander Ilott
- Alfred A Ilott to John P Ilott
- Joseph Ilott to Isaac Ilsey
- James Ilsey to George Ilsley
- Henry Ilsley to Richard Ilsley
- Richard Ilsley to Thomas Ilymon
- Ann Image to George Imber
- George Imber to William Imber
- John Imbers to Christianna Imeson
- Christopher Imeson to Matthias Imeson
- Peter Imeson to Arthur Imhofe
- James Imhofe to Charles Imlach
- Elspit Imlach to George Imlah
- Helen Imlah to Henry Imm
- Henry Imm to Harry Imms
- Henry Imms to Benjamin Impett
- Charles Impett to William Mark Impett
- Susan Impette to Edward A Impey
- Edward H Impey to James Impey
- James Impey to Nathan Impey
- Owen Impey to William Impey
- William Impey to Ann Imray
- David Imray to Mary A E Imray
- Peter Imray to Andrew Imrie