WC
William Crosby — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Crosby across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Crosby |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Rosadrane Crosby | Daughter | — | 8 | ~1932 |
| Lula Crosby | Daughter | — | 21 | ~1919 |
| Ella Crosby | Spouse | — | 49 | ~1891 |
| Earline Crosby | Daughter | — | 16 | ~1924 |
| Louis Crosby | Son | — | 6 | ~1934 |
| Daniel Crosby | Son | — | 19 | ~1921 |
| Perline Crosby | Daughter | — | 18 | ~1922 |
| William Crosby | Son | — | 12 | ~1928 |
Census Appearances
1930
Cook, Illinois
Son, age 2
Cook, Illinois · implied b. ~1928 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Crosby |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Alabama |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 12
Cook-County, Illinois · implied b. ~1928 — 8 household members
| Surname | Crosby |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | No 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 William Crosby across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Crosby
Son · 1940 · age 12 · b. ~1928 · Illinois
★ You are viewing this record
Sibling
Daniel Crosby
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosadrane Crosby
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earline Crosby
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Crosby
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lula Crosby
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Perline Crosby
Sibling · 1940 · age 18
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-t0627-00925-00992)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ella Bell Crosby | 49 | Wife | — | Alabama |
| 42 | Lula Beatrice Crosby | 21 | Daughter | New Worker | Illinois |
| 43 | Daniel Crosby | 19 | Son | Porter | Illinois |
| 44 | Perline Crosby | 18 | Daughter | — | Illinois |
| 45 | Earline Crosby | 16 | Daughter | — | Illinois |
| 46 | William Crosby THIS PERSON | 12 | Son | — | Illinois |
| 47 | Rosadrane Crosby | 8 | Daughter | — | Illinois |
| 48 | Louis Crosby | 6 | Son | — | Illinois |
| 49 | Frank Silvers | 61 | Head | Concrete Layer | Kentucky |
| 50 | Ruby Silvers | 41 | Wife | — | Arkansas |
| 51 | Angie Frazier | 66 | Mother in law | — | Arkansas |
| 52 | Larry Chambers | 67 | Head | — | Mississippi |
| 53 | Nellie Chambers | 37 | Wife | — | Georgia |
| 54 | Eugene Chambers | 11 | Lodger | — | Illinois |
| 55 | Sudie May Chambers | 10 | Lodger | — | Illinois |
| 56 | Fred Chambers | 9 | Lodger | — | Illinois |
| 57 | William Kinnebrew | 47 | Head | Utility Man | Alabama |
| 58 | Goldie Kinnebrew | 42 | Wife | — | Indiana |
| 59 | Milburn Moore | 53 | Lodger | — | Alabama |
| 60 | Charles Gary | 40 | Head | Laborer | Texas |
| 61 | Kimmie Gary | 30 | Wife | — | Texas |
| 62 | Annie Flemming | 19 | Lodger | — | Mississippi |
| 63 | Joseph Pickett | 36 | Lodger | Utility Man | Mississippi |
| 64 | Ester Pickett | 27 | Lodger | — | Arkansas |
| 65 | Lottie Pickett | 11 | Lodger | — | Missouri |
| 66 | Essie Pickett | 10 | Lodger | — | Missouri |
| 67 | Shirley Pickett | 8 | Lodger | — | Missouri |
| 68 | Mary Henderson | 32 | Head | — | Alabama |
| 69 | Hazel Smith | 32 | Lodger | Housemaid | Mississippi |
| 70 | Cleo Owens | 30 | Lodger | Housemaid | Arkansas |
| 71 | Lillie Bowen | 46 | Lodger | Sealer | Mississippi |
| 72 | Henry Walters | 16 | Lodger | — | Indiana |
| 73 | Frank Nicholas | 37 | Lodger | Utility Man | Mississippi |
| 74 | Lettie Feathers | 19 | Lodger | — | Mississippi |
| 75 | Lucas Sawyer | 44 | Lodger | Porter | Tennessee |
| 76 | William Chance | 59 | Head | — | Mississippi |
| 77 | Delia Chance | 66 | Wife | — | Alabama |
| 78 | Carrie Robertson | 33 | Lodger | — | Mississippi |
| 79 | James Robertson | 3 | Lodger | — | Illinois |
| 80 | Charles Mccaskey | 35 | Lodger | Utility Man | Indiana |
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)