John Osman to Sam Othick - 1911 Census household returns
- John Osman to Louisa Kate Osman
- Louise Osman to Thomas Osman
- Thomas Osman to William Archibald Osman
- William Charles Osman to Charles Osment
- Charles F Osment to Sarah Osment
- Sarah Midway Osment to Emily Eliza Osmon
- Fredrick Osmon to Annie Osmond
- Annie Osmond to Edward Osmond
- Edward Osmond to Ernest John Osmond
- Ernest Victor Osmond to George Osmond
- George Osmond to Henry Osmond
- Henry Osmond to John Osmond
- John Osmond to Mary Osmond
- Mary Osmond to Samuel Osmond
- Samuel Osmond to Thomas William Osmond
- Thomas William Osmond to William Osmond
- William Osmond to George Osmont
- Pierre Marguerite Osmont to Morris Ososky
- Morris Ososky to Charles Ost
- Charles Thomas Ost to George Ostell
- Herbert Ostell to Emily Osterberg
- Esin Osterberg to Robert Ostermayer
- Ernest Dawson Ostermeyer to Ernest Ostick
- Ethelwyn Ostick to Elizabeth Ostle
- Frank Shields Ostle to Richard Ostle
- Richard Ostle to Alfred C Ostler
- Alfred E Ostler to Frederich Ostler
- Frederick Ostler to John Welch Ostler
- John William Ostler to William Ostler
- William Ostler to Walter William Oston
- William Howorth Oston to Stanislaus Ostrorog
- Boleslow Ostroski to Alexander Oswald
- Alexander Oswald to Emma Gordon Oswald
- Ernest Albert Oswald to James Oswald
- James Oswald to Julius Oswald
- John Oswald to Robina Oswald
- Row Lady E Oswald to William Oswald
- William Ed Oswald to Frederick Thomas Oswell
- Frederick Thomas Oswell to William Alfred Oswell
- William Edward Oswell to Walter Oswick
- William Oswick to Harry Oswin
- Harry Oswin to R B Oswin
- Sarah Oswin to Albert Edward Othen
- Alfred Othen to Jenney May Woods Othen
- Jessie Othen to Sam Othick