William Knapp to Joseph Knapper - 1881 Census household returns
- William Knapp
- William Knapp
- William Knapp
- William Knapp
- William Knapp
- William Knapp
- William Brush Knapp
- William F Knapp
- William Fredk W Knapp
- William H Knapp
- William H Knapp
- William Jarvis Knapp
- William P Knapp
- William T Knapp
- William T Knapp
- David Knappell
- Frederic Knappelt
- Amelia Knapper
- Charles Knapper
- Charles Knapper
- Charles Knapper
- Charles Knapper
- David Knapper
- Edward Knapper
- Elijah Knapper
- Enoch Knapper
- Enoch Knapper
- Fredrick Knapper
- Fredrick Knapper
- George Knapper
- George Knapper
- George Wm Knapper
- Harriett Knapper
- Henery W Knapper
- Henry Knapper
- Henry Knapper
- Herbert Knapper
- I Knapper
- Isaac Knapper
- James Knapper
- James Knapper
- James Knapper
- James Knapper
- John Knapper
- John Knapper
- John Knapper
- Joseph Knapper
- Joseph Knapper
- Joseph Knapper
- Joseph Knapper