LS
Leroy Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Leroy Smith across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 12-person household.
Age 11
b. ~1929
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Smith |
| Given Name | Leroy |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| 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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Leroy | Age | Birth yr |
|---|---|---|---|---|
| Jean Smith | Daughter | — | 5 | ~1935 |
| Doris Smith | Daughter | — | 8 | ~1932 |
| Christine Smith | Daughter | — | 18 | ~1922 |
| Priscilla Smith | Daughter | — | 21 | ~1919 |
| Priscilla Smith | Head | — | 42 | ~1898 |
| Cecil Smith | Son | — | 26 | ~1914 |
| Pleamon Smith | Son | — | 25 | ~1915 |
| Niles Smith | Son | — | 17 | ~1923 |
| Valdimere Smith | Son | — | 10 | ~1930 |
| Carl Smith | Son | — | 25 | ~1915 |
| Leroy Smith | Son | — | 11 | ~1929 |
| Kenneth Smith | Son | — | 14 | ~1926 |
Census Appearances
1930
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1929 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Leroy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Missouri |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 11
Cook-County, Illinois · implied b. ~1929 — 12 household members
| Surname | Smith |
| Given Name | Leroy |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | No 5 |
| 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 Leroy Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Leroy Smith
Son · 1940 · age 11 · b. ~1929 · Illinois
★ You are viewing this record
Sibling
Jean Smith
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Christine Smith
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Smith
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Smith
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Niles Smith
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Smith
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecil Smith
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Valdimere Smith
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pleamon Smith
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Priscilla Smith
Sibling · 1940 · age 21
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-t0627-00922-00706)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ulysses Cook | 24 | step son | Laborer | Alabama |
| 42 | Mable Cook | 49 | lodger | Shirt Ironer | Mississippi |
| 43 | Juanita Jones | 12 | lodger | — | Illinois |
| 44 | Johnella Happy | 1 | daughter | — | Illinois |
| 45 | John Davis | 60 | head | Sewer Cleaner | Louisiana |
| 46 | Mary Davis | 49 | wife | — | Louisiana |
| 47 | Roscoe Nelson | 47 | brother-in-law | — | Louisiana |
| 48 | Priscilla Smith | 42 | head | — | Missouri |
| 49 | Cecil Smith | 26 | son | Concrete Laborer | Illinois |
| 50 | Pleamon Smith | 25 | son | Sign Painter | Illinois |
| 51 | Carl Smith | 25 | son | Saw Operator | Illinois |
| 52 | Christine Smith | 18 | daughter | — | Illinois |
| 53 | Priscilla Smith | 21 | daughter | Newworker | Illinois |
| 54 | Niles Smith | 17 | son | — | Illinois |
| 55 | Kenneth Smith | 14 | son | — | Illinois |
| 56 | Leroy Smith THIS PERSON | 11 | son | — | Illinois |
| 57 | Valdimere Smith | 10 | son | — | Illinois |
| 58 | Doris Smith | 8 | daughter | — | Illinois |
| 59 | Jean Smith | 5 | daughter | — | Illinois |
| 60 | Julia Williams | 43 | head | Clerk | Georgia |
| 61 | Dan Williams | 44 | husband | Court Clerk | Alabama |
| 62 | Robert Sr Williams | 72 | in-law | — | Alabama |
| 63 | Amos Brinson | 69 | lodger | — | Georgia |
| 64 | Marie Brinson | 56 | lodger | — | Georgia |
| 65 | John Thomas | 58 | head | Laborer | Tennessee |
| 66 | Elizabeth Thomas | 40 | wife | Clerk | Tennessee |
| 67 | Plumie Jackson | 64 | head | Lamp Wrapper | Alabama |
| 68 | Ophelia Williams | 29 | aunt | Lamp Trimmer | Alabama |
| 69 | Rose Clemons | 74 | lodger | — | Georgia |
| 70 | Estelle Harris | 28 | lodger | — | Georgia |
| 71 | Lonnie Harris | 3 | lodger | — | Illinois |
| 72 | Jean Harris | 1 | lodger | — | Illinois |
| 73 | Healey Clemons | 35 | lodger | 0 | Georgia |
| 74 | Joe Clemons | 43 | lodger | Porter | Georgia |
| 75 | Lee Dabney | 56 | head | Janitor | Louisiana |
| 76 | Lillie Dabney | 40 | wife | — | Mississippi |
| 77 | William Dabney | 17 | son | — | Mississippi |
| 78 | Lee Jr Dabney | 12 | son | — | Illinois |
| 79 | Haddock Glover | 57 | head | Porter | Alabama |
| 80 | Leonard Weaver | 45 | lodger | Watchman | Texas |
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)