JC
James Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Christian-County, Illinois
Our Model Tree links this James Cook across the 1930 and 1940 US Censuses in Christian-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 13-person household.
Age 17
b. ~1923
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Christian-County, Illinois |
| Surname | Cook |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Christian |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Ill |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Buckhart |
| 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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Lucy Cook | Daughter | — | 3 | ~1937 |
| Walter Cook | Head | — | 48 | ~1892 |
| Roland Cook | Other | — | 71 | ~1869 |
| Daniel Cook | Son | — | 13 | ~1927 |
| Arthur Cook | Son | — | 21 | ~1919 |
| Donald Cook | Son | — | 4 | ~1936 |
| Edward Cook | Son | — | 26 | ~1914 |
| William Cook | Son | — | 10 | ~1930 |
| Wilbur Cook | Son | — | 10 | ~1930 |
| Charles Cook | Son | — | 7 | ~1933 |
| James Cook | Son | — | 17 | ~1923 |
| Walter Cook | Son | — | 9 | ~1931 |
| Mary Cook | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Christian, Illinois
Son, age 7
Christian, Illinois · implied b. ~1923 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Christian-County, Illinois
Son, age 17
Christian-County, Illinois · implied b. ~1923 — 13 household members
| Surname | Cook |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Christian |
| Highest Grade | No 8 |
| 1935 Residence | Ill |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 James Cook across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Cook
Son · 1940 · age 17 · b. ~1923 · Illinois
★ You are viewing this record
Sibling
Walter Cook
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Cook
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Cook
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucy Cook
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wilbur Cook
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Cook
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Cook
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Cook
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Cook
Sibling · 1940 · age 13
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 — Christian-County, Illinois
Open full size
1940 US Federal Census — Christian-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00767-00120)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ruth Hundley | 43 | Wife | — | Illinois |
| 42 | Nellie Marie Hundley | 20 | Daughter | — | Illinois |
| 43 | Walter R. Cook | 48 | Head | Laborer | Illinois |
| 44 | Mary Cook | 46 | Wife | — | Illinois |
| 45 | Edward Cook | 26 | Son | Farm Laborer | Illinois |
| 46 | Arthur Cook | 21 | Son | Farm Laborer | Illinois |
| 47 | James Cook THIS PERSON | 17 | Son | — | Illinois |
| 48 | Daniel Cook | 13 | Son | — | Illinois |
| 49 | William Cook | 10 | Son | — | Illinois |
| 50 | Wilbur Cook | 10 | Son | — | Illinois |
| 51 | Walter Lee Cook | 9 | Son | — | Illinois |
| 52 | Charles Cook | 7 | Son | — | Illinois |
| 53 | Donald Cook | 4 | Son | — | Illinois |
| 54 | Lucy Mae Cook | 3 | Daughter | — | Illinois |
| 55 | Roland W. Cook | 71 | Father | — | Illinois |
| 56 | Charles R. Nave | 67 | Head | Farmer | Illinois |
| 57 | Maude Nave | 49 | Wife | — | Chicago |
| 58 | Charlene Stumpher | 22 | Daughter | — | Illinois |
| 59 | Charles Stumpher | 22 | Son-in-law | — | Missouri |
| 60 | Fred C. Smith | 51 | Head | Farmer | Illinois |
| 61 | Molly Smith | 57 | Sister | Housewife | Illinois |
| 62 | Sam Sutton | 64 | Head | Caretaker | Illinois |
| 63 | Elizabeth Mckinnon | 46 | Head | Housekeeper | Kentucky |
| 64 | William Nave | 70 | Head | — | Illinois |
| 65 | Della Nave | 60 | Wife | — | Illinois |
| 66 | Everett Nave | 34 | Son | Farmer | Illinois |
| 67 | Ruby Nave | 25 | Daughter | Farmer | Illinois |
| 68 | Eva Nave | 23 | Daughter | Houseworker | Illinois |
| 69 | Veda Nave | 21 | Daughter | Houseworker | Illinois |
| 70 | Minnie Houson | 53 | Sister | Houseworker | Illinois |
| 71 | Opal Houson | 30 | Niece | Houseworker | Illinois |
| 72 | Ernest Hensley | 63 | Head | Farm Laborer | Illinois |
| 73 | Louemary Hensley | 61 | Wife | — | Illinois |
| 74 | Ernestine Hensley | 26 | Daughter | — | Illinois |
| 75 | Elizabeth Ann Hensley | 24 | Daughter | — | Illinois |
| 76 | T. B. Hensley | 70 | Head | Farmer | Illinois |
| 77 | Ella Hensley | 78 | Wife | Housewife | Illinois |
| 78 | Elizabeth Blanford | 68 | Help | Hired Hand | Illinois |
| 79 | E. Ray Vary | 48 | Head | Farmer | Illinois |
| 80 | Goldie Vary | 45 | Wife | Housewife | Illinois |
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)