William Ould to Joseph Over - 1911 Census household returns
- William Ould to William Samuel Oulds
- Philip D Oulen to Charles Oulton
- Daniel Oulton to Joseph Oulton
- Joseph Walter Oulton to Charles Oultram
- Daniel Oultram to Miggerditch Andon Oundjian
- Kate Oundsworth to Nora Ourvassoff
- Ann Ourvis to James Ouseley
- John Grove Ouseley to Tom Ousey
- William Ousey to William Alfred Ousley
- William Henry Ousley to Charles Outen
- Charles David Outen to Thomas Williams Outerbridge
- Elizabeth Ann Outerside to Benjamin Outhwaite
- Benjamin Outhwaite to George William Outhwaite
- George William Outhwaite to John Outhwaite
- John Outhwaite to Richard Outhwaite
- Richard Outhwaite to William Outhwaite
- William Outhwaite to Frank Outlaw
- Frederick Ernest Outlaw to Joseph Outley
- Thomas Outley to Charles Henry Outram
- Charles William Outram to George Outram
- George Outram to James Edward Outram
- James John Outram to Mary Outram
- Mary Ann Outram to Thomas Wilmot Outram
- W H Outram to Masiliam Outred
- Philip Outred to Charles Outten
- Charles Thomas Outten to John Outterside
- John Outterside to Joseph Crosby Outwaite
- Percy King Outwaite to George Ouzman
- Isabella Ouzman to Ann Ovell
- Edward Augustus Ovell to Robert Ovendale
- Thomas Henry Ovendale to Charles Ovenden
- Charles Ovenden to Edwin William Ovenden
- Eleanor Ovenden to George Ovenden
- George Ovenden to Henry Revell Ovenden
- Henry William Ovenden to Joseph William Ovenden
- Joseph William Ovenden to Stephen Ovenden
- Stephen Cook Ovenden to William Barker Ovenden
- William Charles Ovenden to Ann Elizer Ovens
- Archer Henry Ovens to Gardiner Ovens
- George Ovens to Jane Ovens
- Jesse Ovens to Selina Ovens
- Shadrach Tho Ovens to Alfred Over
- Alfred Over to Elizabeth Over
- Elizabeth Over to Harriet Over
- Harriett Over to Joseph Over