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John James — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John James across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 12-person household.
Age 12
b. ~1928
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | James |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Chicago |
| Est. Birth Year | ~1928 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Julia James | Daughter | — | 10 | ~1930 |
| Genevieve James | Daughter | — | 20 | ~1920 |
| Mary James | Daughter | — | 13 | ~1927 |
| Doris James | Daughter | — | 14 | ~1926 |
| William James | Head | — | 53 | ~1887 |
| Bernard James | Son | — | 19 | ~1921 |
| William James | Son | — | 17 | ~1923 |
| Andrew James | Son | — | 11 | ~1929 |
| John James | Son | — | 12 | ~1928 |
| David James | Son | — | 15 | ~1925 |
| George James | Son | — | 8 | ~1932 |
| Ada James | Spouse | — | 50 | ~1890 |
Census Appearances
1930
Cook, Illinois
Son, age 2
Cook, Illinois · implied b. ~1928 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | James |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Missouri |
| Can Read/Write | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Cook-County, Illinois
Son, age 12
Cook-County, Illinois · implied b. ~1928 — 12 household members
| Surname | James |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | 4 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 James across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John James
Son · 1940 · age 12 · b. ~1928 · Illinois
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Sibling
Mary James
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David James
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George James
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William James
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Andrew James
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Genevieve James
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia James
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris James
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard James
Sibling · 1940 · age 19
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00933-00119)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gladys Hughes | 19 | daughter | — | Georgia |
| 42 | Rosa Hughes | 17 | daughter | — | Georgia |
| 43 | Henry Hughes | 15 | son | — | Illinois |
| 44 | Geneva Hughes | 13 | daughter | — | Illinois |
| 45 | John Hughes | 10 | son | — | Illinois |
| 46 | Earl Hughes | 9 | son | — | Illinois |
| 47 | Rosa Virgil | 65 | Mother | — | Georgia |
| 48 | Seabron Virgil | 66 | Father | — | Georgia |
| 49 | B. F. Swain | 56 | Head | — | Oklahoma |
| 50 | Roberta Swain | 39 | wife | — | Louisiana |
| 51 | Willie Mae Swain | 15 | daughter | — | Oklahoma |
| 52 | Vermilla Swain | 13 | daughter | — | Oklahoma |
| 53 | Linnes Mae Swain | 12 | daughter | — | Oklahoma |
| 54 | B. F. Jr. Swain | 10 | son | — | Oklahoma |
| 55 | Topaz Swain | 9 | son | — | Oklahoma |
| 56 | Hermeneer Swain | 7 | daughter | — | Oklahoma |
| 57 | Pedro Jr. Swain | 4 | son | — | Oklahoma |
| 58 | Montovienus Swain | 2 | son | — | Illinois |
| 59 | Eastaveyon Swain | 0 | son | — | Illinois |
| 60 | William James | 53 | Head | Laborer | Indiana |
| 61 | Ada James | 50 | wife | — | Missouri |
| 62 | Genevieve James | 20 | daughter | — | Missouri |
| 63 | Bernard James | 19 | son | — | Missouri |
| 64 | William Jr. James | 17 | son | — | Missouri |
| 65 | David James | 15 | son | — | Missouri |
| 66 | Doris James | 14 | daughter | — | Missouri |
| 67 | Mary Ann James | 13 | daughter | — | Missouri |
| 68 | John James THIS PERSON | 12 | son | — | Missouri |
| 69 | Andrew James | 11 | son | — | Missouri |
| 70 | Julia James | 10 | daughter | — | Illinois |
| 71 | George James | 8 | son | — | Illinois |
| 72 | Florine May | 28 | Head | Stock Girl | Alabama |
| 73 | James May | 10 | son | — | Illinois |
| 74 | Thelton May | 4 | son | — | Illinois |
| 75 | David May | 3 | son | — | Illinois |
| 76 | Tommie Shelton | 58 | Mother | — | Alabama |
| 77 | Jeff Caruthers | 32 | Lodger | Wringer | Mississippi |
| 78 | Edna Caruthers | 18 | daughter | — | Kansas |
| 79 | Larnie Caruthers | 16 | son | — | Kansas |
| 80 | Robert Johnson | 54 | Lodger | Truck Driver | Kentucky |
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)