JL
John Lawrence — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Illinois
Our Model Tree links this John Lawrence across the 1930 and 1940 US Censuses in Madison-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Illinois |
| Surname | Lawrence |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East Alton |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Hartford Village |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Lawrence | Daughter | — | 5 | ~1935 |
| Elsie Lawrence | Daughter | — | 2 | ~1938 |
| Nellie Lawrence | Daughter | — | 9 | ~1931 |
| Shirley Lawrence | Daughter | — | 3 | ~1937 |
| John Lawrence | Head | — | 37 | ~1903 |
| John Lawrence | Son | — | 12 | ~1928 |
| Leslie Lawrence | Son | — | 10 | ~1930 |
| Robert Lawrence | Son | — | 4 | ~1936 |
| Donald Lawrence | Son | — | 7 | ~1933 |
| Nellie Lawrence | Spouse | — | 38 | ~1902 |
Census Appearances
1930
Madison, Illinois
Son, age 2
Madison, Illinois · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lawrence |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | England |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Madison-County, Illinois
Son, age 12
Madison-County, Illinois · implied b. ~1928 — 10 household members
| Surname | Lawrence |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | East Alton |
| 1935 Residence (County) | Madison |
| Highest Grade | 5 |
| 1935 Residence | Illinois |
| 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 John Lawrence across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Lawrence
Son · 1940 · age 12 · b. ~1928 · Illinois
★ You are viewing this record
Sibling
Dorothy Lawrence
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Lawrence
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elsie Lawrence
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leslie Lawrence
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Lawrence
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Lawrence
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Lawrence
Sibling · 1940 · age 7
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 — Madison-County, Illinois
Open full size
1940 US Federal Census — Madison-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00848-00937)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Carl H. Bain | 27 | Cousin | Laborer | Illinois |
| 42 | Elsie Bain | 30 | Wife | Mangle Operator | Illinois |
| 43 | George A. Bain | 24 | Cousin | Laborer | Illinois |
| 44 | Matt Dworzynski | 31 | Head | Grocer | Illinois |
| 45 | Anna Dworzynski | 25 | Wife | Assist. Husband | Illinois |
| 46 | Joseph E. Tarsila | 20 | Brother-in-law | Clerk | Illinois |
| 47 | George R. Schulte | 49 | Head | Fireman | Illinois |
| 48 | Daisy N. Schulte | 50 | Wife | — | Illinois |
| 49 | Calvin W. Smith | 42 | Head | Laborer | Pennsylvania |
| 50 | Helen N. Smith | 39 | Wife | Embossing Machine Operator | Pennsylvania |
| 51 | C. Ernest Smith | 17 | Son | — | Pennsylvania |
| 52 | Norma L. Smith | 14 | Daughter | — | Pennsylvania |
| 53 | Lester A. Sparks | 37 | Head | Water Commissioner | Indiana |
| 54 | Ada M. Sparks | 34 | Wife | — | Missouri |
| 55 | Janet E. Sparks | 8 | Daughter | — | Indiana |
| 56 | Harold L. Sparks | 7 | Son | — | Illinois |
| 57 | John B. Lawrence | 37 | Head | Laborer | Illinois |
| 58 | Nellie O. Lawrence | 38 | Wife | — | England |
| 59 | John C. Lawrence THIS PERSON | 12 | Son | — | Illinois |
| 60 | Leslie E. Lawrence | 10 | Son | — | Illinois |
| 61 | Nellie E. Lawrence | 9 | Daughter | — | Illinois |
| 62 | Donald Lee Lawrence | 7 | Son | — | Illinois |
| 63 | Dorothy Lou Lawrence | 5 | Daughter | — | Illinois |
| 64 | Robert D. Lawrence | 4 | Son | — | Illinois |
| 65 | Shirley A. Lawrence | 3 | Daughter | — | Illinois |
| 66 | Elsie M. Lawrence | 2 | Daughter | — | Illinois |
| 67 | Ellis E. Robertson | 27 | Head | Laborer | Alabama |
| 68 | Nellie B. Robertson | 24 | Wife | Drubber | Missouri |
| 69 | Charles E. Robertson | 4 | Son | — | Illinois |
| 70 | Carl E. Rader | 27 | Head | Construction Laborer | Indiana |
| 71 | Marcia A. Rader | 18 | Wife | — | Illinois |
| 72 | Thomas N. Harns | 34 | Head | Dry-Loft Worker | Illinois |
| 73 | Opal R. Harns | 32 | Wife | — | Illinois |
| 74 | Glenn-Major Harns | 12 | Son | — | Illinois |
| 75 | Richard T. Harns | 1 | Son | — | Illinois |
| 76 | Elmer Plank | 40 | Head | Gasoline Tester | Missouri |
| 77 | Ella Plank | 61 | Mother | — | Missouri |
| 78 | Hugh H. Petitt | 32 | Head | Chief Of Police | Illinois |
| 79 | Lucille D. Petitt | 30 | Wife | — | Illinois |
| 80 | L. Allen Petitt | 9 | Son | — | Illinois |
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)