LC
Lois Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Kansas
Our Model Tree links this Lois Clark across the 1930 and 1940 US Censuses in Jefferson-County, Kansas (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 6-person household.
Age 17
b. ~1923
Female
Daughter
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Kansas |
| Surname | Clark |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Rock Creek |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Rock Creek |
| Est. Birth Year | ~1923 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lois | Age | Birth yr |
|---|---|---|---|---|
| Frieda Clark | Daughter | — | 8 | ~1932 |
| Lorena Clark | Daughter | — | 10 | ~1930 |
| Pearl Clark | Spouse | — | 44 | ~1896 |
| Charley Clark | Head | — | 47 | ~1893 |
| Lois Clark | Daughter | — | 17 | ~1923 |
| Dale Clark | Son | — | 15 | ~1925 |
Census Appearances
1930
Jefferson, Kansas
Daughter, age 7
Jefferson, Kansas · implied b. ~1923 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Lois L. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Jefferson-County, Kansas
Daughter, age 17
Jefferson-County, Kansas · implied b. ~1923 — 6 household members
| Surname | Clark |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Rock Creek |
| 1935 Residence (County) | Jefferson |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| 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 Lois Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lois Clark
Daughter · 1940 · age 17 · b. ~1923 · Kansas
★ You are viewing this record
Sibling
Lorena Clark
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dale Clark
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frieda Clark
Sibling · 1940 · age 8
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 — Jefferson-County, Kansas
Open full size
1940 US Federal Census — Jefferson-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01236-00257)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John O Hofmann | 38 | Head | Farmer | Kansas |
| 42 | Glossie Hofmann | 33 | Wife | Housewife | Kansas |
| 43 | Joy Ann Hofmann | 7 | Daughter | — | Kansas |
| 44 | Ilene Hofmann | 5 | Daughter | — | Kansas |
| 45 | Charles O Cole | 78 | Head | Farmer | Michigan |
| 46 | Minnie Cole | 73 | Wife | Housewife | Kansas |
| 47 | Archie Means | 64 | Head | Farmer | Missouri |
| 48 | Florence Means | 59 | Wife | Housewife | Missouri |
| 49 | Ray O James | 50 | Head | Farmer | Kansas |
| 50 | Elsie James | 47 | Wife | Housewife | Indiana |
| 51 | Ethel Fay James | 17 | Daughter | — | Kansas |
| 52 | Fred W Krumm | 63 | Head | — | Missouri |
| 53 | Alta Krumm | 55 | Wife | Housewife | Kansas |
| 54 | Raymond Krumm | 17 | Son | — | Kansas |
| 55 | John O Johnson | 61 | Head | Farmer | Kansas |
| 56 | Harry D Martin | 51 | Head | Farmer | Kansas |
| 57 | Edythe Martin | 42 | Wife | Housewife | Kansas |
| 58 | Forley Martin | 20 | Son | — | Kansas |
| 59 | Burley Martin | 18 | Son | Janitor | Kansas |
| 60 | Daisy Martin | 15 | Daughter | — | Kansas |
| 61 | Nelson Martin | 13 | Son | — | Kansas |
| 62 | Chalmer Martin | 10 | Son | — | Kansas |
| 63 | Nathan James | 75 | Head | — | Iowa |
| 64 | Martha James | 75 | Wife | Housewife | Kansas |
| 65 | Lee Melton | 67 | Head | Housewife | Missouri |
| 66 | Oscar Melton | 40 | Son | Farmer | Missouri |
| 67 | Adolph Melton | 11 | Brother | — | Missouri |
| 68 | James L Green | 54 | Head | Farmer | Kansas |
| 69 | Mattie A Green | 53 | Wife | Housewife | Missouri |
| 70 | Charley O Clark | 47 | Head | Farmer | Kansas |
| 71 | Pearl Clark | 44 | Wife | Housewife | Indiana |
| 72 | Lois Clark THIS PERSON | 17 | Daughter | — | Kansas |
| 73 | Dale Clark | 15 | Son | — | Kansas |
| 74 | Lorena Clark | 10 | Daughter | — | Kansas |
| 75 | Frieda Clark | 8 | Daughter | — | Kansas |
| 76 | Adolf Haesler | 60 | Head | Farmer | Switzerland |
| 77 | Emma Haesler | 68 | Wife | Housewife | Kansas |
| 78 | Chas S Jager | 54 | Head | Farmer | Iowa |
| 79 | Alfreda Jager | 45 | Wife | Housewife | Iowa |
| 80 | Leroy Jager | 21 | Son | Labor | Kansas |
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)