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KNIFTONS TRACED TO THE 1940 CENSUS
| Person | Age | Place Born |
| Arthur James Knifton | 31 | California |
| Carolynn Knifton (spouse) | 61 | Canada |
| Charles Joseph Knifton | 27 | Colorado |
| Charlotte Philena Winkler (née Knifton) | 38 | Iowa |
| Edith Knifton (spouse) | 43 | Indiana |
| Emily Evangeline Knudson (née Knifton) | 54 | Pennsylvania |
| Ernest Knifton | 43 | Missouri |
| Francis Knifton | 34 | Colorado |
| Helen Knifton (spouse) | 32 | Washington |
| Herbert Samuel Knifton | 61 | Canada |
| Icy May Knifton (spouse) | 43 | Texas |
| Irene Eliza Knifton | 34 | Arizona |
| John Wesley Knifton | 59 | Colorado |
| Joseph William Knifton | 15 | Wyoming |
| Joseph Burrows Knifton | 39 | Nebraska |
| Lillia Philena Knifton | 21 | Colorado |
| Lois Mary Johnston (née Knifton) | 41 | Arizona |
| Louisa Abner McWilliams (née Knifton) | 25 | California |
| Mary Knifton (spouse) | 56 | Colorado |
| Thomas Owen Knifton | 31 | Arizona |
