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Lawrence Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Lawrence Williams across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 12-person household.
Age 10
b. ~1930
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Williams |
| Given Name | Lawrence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | Yes 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| 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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lawrence | Age | Birth yr |
|---|---|---|---|---|
| Julius Williams | Head | — | 49 | ~1891 |
| Paul Williams | Son | — | 19 | ~1921 |
| Lawrence Williams | Son | — | 10 | ~1930 |
| Fannie Williams | Daughter | — | 16 | ~1924 |
| Julius Williams | Son | — | 12 | ~1928 |
| Catherine Williams | Daughter | — | 8 | ~1932 |
| Nevamue Williams | Daughter | — | 2 | ~1938 |
| Dinah Flemming | Other | — | 79 | ~1861 |
| Joe Roussel | Other | — | 48 | ~1892 |
| Yvonne Williams | Daughter | — | 5 | ~1935 |
| Maymie Williams | Spouse | — | 39 | ~1901 |
| Joseph Williams | Son | — | 14 | ~1926 |
Census Appearances
1930
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1929 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Lawrence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Louisiana |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 10
Cook-County, Illinois · implied b. ~1930 — 12 household members
| Surname | Williams |
| Given Name | Lawrence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | Yes 4 |
| 1935 Residence | Same house |
| 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 Lawrence Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lawrence Williams
Son · 1940 · age 10 · b. ~1930 · Illinois
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Sibling
Nevamue Williams
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Williams
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Williams
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julius Williams
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Williams
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Yvonne Williams
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fannie Williams
Sibling · 1940 · age 16
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-t0627-00925-00882)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Benard Scott | 32 | Lodger | Truck Driver | Louisiana |
| 42 | Harry Woods | 30 | Lodger | Club Manager | Missouri |
| 43 | Rella Jones | 24 | Lodger | Maid | Mississippi |
| 44 | Jake Coleman | 42 | Lodger | Porter | Georgia |
| 45 | Theodore Moultrie | 23 | Head | New Worker | Alabama |
| 46 | Lucille Thomas | 27 | Sister | — | Alabama |
| 47 | Edward Thomas | 8 | Nephew | — | Alabama |
| 48 | Emma Moultrie | 53 | Mother | — | Alabama |
| 49 | Henry Smith | 29 | Head | Packer | Arkansas |
| 50 | Laura Mozie | 31 | Head | House Maid | Virginia |
| 51 | John Bailey | 43 | Head | — | Tennessee |
| 52 | Mary Johnson | 43 | Head | Nurse | Kentucky |
| 53 | George Richardson | 28 | Head | Car Washer | Alabama |
| 54 | Earlene Richardson | 27 | Wife | House Maid | Louisiana |
| 55 | Willis Steward | 39 | Head | Porter | Arkansas |
| 56 | Leola Steward | 35 | Wife | Laundress | Alabama |
| 57 | Melvin Brooks | 30 | Head | Grader | Tennessee |
| 58 | James Lott | 47 | Head | Record Clerk | Texas |
| 59 | Basella Anthony | 47 | Head | — | Pennsylvania |
| 60 | Henry Johnson | 28 | Head | Bus Boy | Mississippi |
| 61 | Rufus Jr. Clay | 13 | Lodger | 0 | Alabama |
| 62 | Frank Clay | 12 | Lodger | 0 | Alabama |
| 63 | May Hay | 24 | Head | Laundress | Indiana |
| 64 | Sue Davis | 34 | Head | Grader | Arkansas |
| 65 | John Collins | 48 | Head | Grader | Missouri |
| 66 | Mattie Collins | 22 | Wife | House Maid | Tennessee |
| 67 | Will Crag | 54 | Head | Grader | Illinois |
| 68 | Earnesteen Crag | 39 | Wife | — | No Carolina |
| 69 | Julius Williams | 49 | Head | Moulder | Louisiana |
| 70 | Maymie Williams | 39 | Wife | — | Louisiana |
| 71 | Paul Williams | 19 | Son | New Worker | Louisiana |
| 72 | Fannie Williams | 16 | Daughter | — | Louisiana |
| 73 | Joseph Williams | 14 | Son | — | Illinois |
| 74 | Julius Williams | 12 | Son | — | Illinois |
| 75 | Lawrence Williams THIS PERSON | 10 | Son | — | Illinois |
| 76 | Catherine Williams | 8 | Daughter | — | Illinois |
| 77 | Yvonne Williams | 5 | Daughter | — | Illinois |
| 78 | Nevamue Williams | 2 | Daughter | — | Illinois |
| 79 | Dinah Flemming | 79 | Lodger | — | Louisiana |
| 80 | Joe Roussel | 48 | Lodger | Decorator | Louisiana |
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)