JK
John Knapp — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cherokee-County, Kansas
Our Model Tree links this John Knapp across the 1930 and 1940 US Censuses in Cherokee-County, Kansas (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Male
Son
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cherokee-County, Kansas |
| Surname | Knapp |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Weir City |
| 1935 Residence (County) | Cherokee |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Weir City |
| Est. Birth Year | ~1929 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Betty Knapp | Daughter | — | 8 | ~1932 |
| Bobbie Knapp | Son | — | 13 | ~1927 |
| Mary Knapp | Daughter | — | 16 | ~1924 |
| John Knapp | Son | — | 11 | ~1929 |
| Frank Knapp | Son | — | 18 | ~1922 |
| Frank Knapp | Head | — | 57 | ~1883 |
| Mary Knapp | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Cherokee, Kansas
Son, age 1
Cherokee, Kansas · implied b. ~1929 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knapp |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Connecticut |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Cherokee-County, Kansas
Son, age 11
Cherokee-County, Kansas · implied b. ~1929 — 7 household members
| Surname | Knapp |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Weir City |
| 1935 Residence (County) | Cherokee |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links John Knapp across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Knapp
Son · 1940 · age 11 · b. ~1929 · Kansas
★ You are viewing this record
Sibling
Bobbie Knapp
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Knapp
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Knapp
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Knapp
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cherokee-County, Kansas
Open full size
1940 US Federal Census — Cherokee-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01223-01143)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John W. Hackworth | 64 | Head | Laborer | Missouri |
| 2 | Fannie Hackworth | 57 | Wife | — | Missouri |
| 3 | Galvin M. Lucas | 43 | Head | Laborer | Missouri |
| 4 | Nellie A. Lucas | 42 | Wife | — | Kansas |
| 5 | Clifford E. Lucas | 18 | Son | New Worker | Kansas |
| 6 | Wilbur W. Lucas | 14 | Son | — | Kansas |
| 7 | Leopold J. Roes | 78 | Head | — | Belgium |
| 8 | Harry H. Lochad | 41 | Head | Proprietor | Kansas |
| 9 | Roberta M. Lochad | 37 | Wife | — | Kansas |
| 10 | Jeanne Lochad | 16 | Daughter | — | Oklahoma |
| 11 | William D. Lochad | 7 | Son | — | Kansas |
| 12 | Robert J. Walker | 67 | Head | Proprietor | New York |
| 13 | Romanna Walker | 57 | Wife | — | Kansas |
| 14 | M. Lorna Walker | 36 | Daughter | Stenographer | Kansas |
| 15 | Carl D. Brown | 56 | Head | Contractor | Kansas |
| 16 | Clara E. Brown | 64 | Wife | — | Missouri |
| 17 | Harriet W. Smith | 70 | Head | — | Kentucky |
| 18 | Noah E. Noble | 64 | Head | Manager | Kansas |
| 19 | Evah D. Noble | 62 | Wife | — | Kentucky |
| 20 | Cecil B. Noble | 26 | Son | Proprietor | Kansas |
| 21 | Mary B. Noble | 21 | Daughter | School Teacher | Kansas |
| 22 | Harry Wilkinson | 68 | Head | — | Pennsylvania |
| 23 | Barbara B. Wilkinson | 63 | Wife | — | Germany |
| 24 | John E. Herring | 26 | Head | Instructor | Kansas |
| 25 | Nadine E. Herring | 22 | Wife | — | Missouri |
| 26 | Emma Jenkins | 53 | Head | — | Kansas |
| 27 | James White | 71 | Head | — | Scotland |
| 28 | Ella White | 68 | Wife | — | Illinois |
| 29 | William J. Fleming | 78 | Head | Poultry Dealer | Indiana |
| 30 | Fred W. Fleming | 47 | Son | Proprietor | Kansas |
| 31 | Anna Gundelfinger | 70 | Sister-in-law | — | Ohio |
| 32 | Frank H. Knapp | 57 | Head | Laborer | Pennsylvania |
| 33 | Mary Z. Knapp | 44 | Wife | — | Connecticut |
| 34 | Frank H. Knapp | 18 | Son | New Worker | Kansas |
| 35 | Mary C. Knapp | 16 | Daughter | — | Kansas |
| 36 | Bobbie L. Knapp | 13 | Son | — | Kansas |
| 37 | John E. Knapp THIS PERSON | 11 | Son | — | Kansas |
| 38 | Betty J. Knapp | 8 | Daughter | — | Kansas |
| 39 | George H. Bennett | 31 | Head | Laborer | Kansas |
| 40 | Effie M. Bennett | 30 | Wife | — | Kansas |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)