William Underwood to Catherine Unsworth - 1911 Census household returns
- William Underwood to William Arthur Underwood
- William B Underwood to William Greaves Underwood
- William H Underwood to William Horace Underwood
- William James Underwood to William Thomas Underwood
- William Thomas Underwood to William Underwoood
- David Underwown to Charlotte Undy
- Fred Undy to George Unett
- Henry Unett to William Augustus Unetts
- Alfred Uney to Emma Unger
- Ernest Unger to Elaine Clarie Ungeriss
- Maria A Ungern Sternbery to John Ungoed
- John Ungoed to John Uniacke
- Leonard Uniacke to William Unicume
- Ernest Unine to Winifred Unions
- Matilda Unit to Conway Percy Unitt
- Edgar Duncan Unitt to Harry Unitt
- Harry Horace Unitt to Walter Unitt
- Walter Henry Unitt to Nora Unna
- Walter Arnold Unna to Emma Unstead
- Ernest Unstead to Albert Unsted
- Albert Unsted to George Unsted
- George William Unsted to Agnes Unsworth
- Agnes Lilian Unsworth to Alfred Edward Unsworth
- Alfred James Unsworth to Ann Unsworth
- Ann Jane Unsworth to Catherine Unsworth