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James Butler — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Butler across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 14-person household.
Age 10
b. ~1930
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Butler |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1930 |
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.
14 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Marvel Butler | Daughter | — | 2 | ~1938 |
| Alvera Butler | Daughter | — | 8 | ~1932 |
| Gertrude Butler | Daughter | — | 15 | ~1925 |
| Pauline Butler | Daughter | — | 14 | ~1926 |
| Margaret Butler | Daughter | — | 17 | ~1923 |
| Clarence Butler | Head | — | 35 | ~1905 |
| Harold Butler | Son | — | 11 | ~1929 |
| Acie Butler | Son | — | 5 | ~1935 |
| Lionel Butler | Son | — | ~1940 | |
| Virgil Butler | Son | — | 6 | ~1934 |
| Clarence Butler | Son | — | 16 | ~1924 |
| Robert Butler | Son | — | 13 | ~1927 |
| James Butler | Son | — | 10 | ~1930 |
| Sarah Butler | Spouse | — | 35 | ~1905 |
Census Appearances
1930
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1929 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Butler |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 10
Cook-County, Illinois · implied b. ~1930 — 14 household members
| Surname | Butler |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| 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 Butler across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Butler
Son · 1940 · age 10 · b. ~1930 · Illinois
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Sibling
Clarence Butler
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lionel Butler
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Butler
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Acie Butler
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Butler
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alvera Butler
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virgil Butler
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Butler
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Butler
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Butler
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marvel Butler
Sibling · 1940 · age 2
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-t0627-00924-00770)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Calloway | 9 | Son | — | Illinois |
| 2 | Clarence Butler | 35 | Head | Laborer | Illinois |
| 3 | Sarah Butler | 35 | Wife | — | Illinois |
| 4 | Margaret Butler | 17 | Daughter | — | Illinois |
| 5 | Clarence Jr. Butler | 16 | Son | — | Illinois |
| 6 | Gertrude Butler | 15 | Daughter | — | Illinois |
| 7 | Pauline Butler | 14 | Daughter | — | Illinois |
| 8 | Robert Butler | 13 | Son | — | Illinois |
| 9 | Harold Butler | 11 | Son | — | Illinois |
| 10 | James Butler THIS PERSON | 10 | Son | — | Illinois |
| 11 | Alvera Butler | 8 | Daughter | — | Illinois |
| 12 | Virgil Butler | 6 | Son | — | Illinois |
| 13 | Acie Butler | 5 | Son | — | Illinois |
| 14 | Marvel Butler | 2 | Daughter | — | Illinois |
| 15 | Lionel Butler | 0 | Son | — | Illinois |
| 16 | Peter House | 44 | Head | Laborer | Mississippi |
| 17 | Carmel House | 36 | Wife | — | Mississippi |
| 18 | Casper House | 17 | Son | — | Mississippi |
| 19 | Lelia House | 14 | Daughter | — | Mississippi |
| 20 | James House | 11 | Son | — | Mississippi |
| 21 | Winnifred House | 9 | Daughter | — | Mississippi |
| 22 | Mattie House | 8 | Daughter | — | Mississippi |
| 23 | William House | 7 | Son | — | Mississippi |
| 24 | Marie House | 6 | Son | — | Mississippi |
| 25 | John House | 3 | Son | — | Mississippi |
| 26 | Claude Jordan | 57 | Head | Laborer | Mississippi |
| 27 | Elizabeth Jordan | 41 | Wife | — | Mississippi |
| 28 | Robert Hughes | 18 | Lodger | New Worker | Mississippi |
| 29 | Rebecca Hughes | 20 | Lodger | — | Mississippi |
| 30 | Vernice Hughes | 1 | Lodger | — | Illinois |
| 31 | Willie Wick | 24 | Head | — | Michigan |
| 32 | Here Ends Wick | None | Block 5 | — | — |
| 33 | Benjamin Blaylock | 42 | Head | Engineer | Tennessee |
| 34 | Eleanore Blaylock | 30 | Wife | Housekeeper | Illinois |
| 35 | Barbara Blaylock | 3 | Daughter | — | Illinois |
| 36 | Adell E. Blaylock | 1 | Daughter | — | Illinois |
| 37 | Iva Plummer | 35 | Lodger | Seamstress | Illinois |
| 38 | Lula Plummer | 10 | Lodger | — | Illinois |
| 39 | Robert Jenkins | 32 | Head | Laborer | Mississippi |
| 40 | Maude Jenkins | 30 | Wife | — | Mississippi |
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)