Rebecca Opic to Jane Orchard - 1911 Census household returns
- Rebecca Opic to E Opie
- Edith Opie to Harold Islen Opie
- Harry Albert Opie to Joseph Opie
- Joseph Opie to Thomas Opie
- Thomas H Opie to William Opley
- Eliza Oplin to Joseph Oppenheim
- Joseph Oppenheim to Rudolf Oppenheimer
- Vera Oppenheimer to Rebecca Oppitz
- Mar Davies Oppler to Albert Oram
- Albert Oram to Archie Reginald Oram
- Arthur Oram to Charles Oram
- Charles Oram to Edward Joseph Sprague Oram
- Edward Richard Oram to Ernest Oram
- Ernest Oram to Frederick Oram
- Frederick Oram to George Oram
- George Oram to George William Oram
- George William Oram to Henry John Oram
- Henry John Oram to James Cyril Oram
- James George Oram to John Oram
- John Oram to Maria Oram
- Marian Oram to Robert Oram
- Robert Oram to Susannah Oram
- Sydney Oram to Walter Oram
- Walter Oram to William Oram
- William Oram to William James Oram
- William John Oram to Alice Orange
- Amelia Orange to George Orange
- George Orange to Joseph Orange
- Joseph Orange to Walter Orange
- Walter Orange to Caroline Orbell
- Charles Orbell to James Orbell
- James Orbell to William Orbell
- William Orbell to Albert G Orchard
- Albert George Orchard to Arthur Orchard
- Arthur Orchard to Chadwick Orchard
- Charles Orchard to Charles William Orchard
- Charles William Orchard to Edward Ernest Orchard
- Edward George Orchard to Ellen Orchard
- Ellen Orchard to Francis Orchard
- Francis Henry Orchard to Frederick Orchard
- Frederick Orchard to George Orchard
- George Orchard to Harriet Orchard
- Harriett Orchard to Henry Orchard
- Henry Orchard to Inkermann Orchard
- Isaac Orchard to Jane Orchard