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Robert Lawrence — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lake-County, Illinois
Our Model Tree links this Robert Lawrence across the 1930 and 1940 US Censuses in Lake-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 8-person household.
Age 19
b. ~1921
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lake-County, Illinois |
| Surname | Lawrence |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Libertyville village |
| 1935 Residence (County) | Lake |
| Additional Details | |
| Occupation | Truck driving |
| Industry | New roads |
| Class of Worker | GW |
| Hours Worked | 2 |
| Income (1939) | 360 |
| Highest Grade | No 7 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Truck Driving |
| Township / Ward | Libertyville Village |
| Est. Birth Year | ~1921 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Elmer Lawrence | Head | — | 52 | ~1888 |
| Mary Lawrence | Spouse | — | 52 | ~1888 |
| John Lawrence | Son | — | 9 | ~1931 |
| Elizabeth Lawrence | Daughter | — | 15 | ~1925 |
| Mary Lawrence | Daughter | — | 11 | ~1929 |
| William Lawrence | Son | — | 13 | ~1927 |
| Robert Lawrence | Son | — | 19 | ~1921 |
| Bernice Lawrence | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Lake, Illinois
Son, age 9
Lake, Illinois · implied b. ~1921 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lawrence |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lake-County, Illinois
Son, age 19
Lake-County, Illinois · implied b. ~1921 — 8 household members
| Surname | Lawrence |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Libertyville village |
| 1935 Residence (County) | Lake |
| Occupation | Truck driving |
| Industry | New roads |
| Class of Worker | GW |
| Hours Worked | 2 |
| Income (1939) | 360 |
| Highest Grade | No 7 |
| 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 Robert Lawrence across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Lawrence
Son · 1940 · age 19 · b. ~1921 · Illinois
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Sibling
John Lawrence
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Lawrence
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Lawrence
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Lawrence
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Lawrence
Sibling · 1940 · age 17
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 — Lake-County, Illinois
Open full size
1940 US Federal Census — Lake-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00829-00450)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Adolph Calvin Sadek | 10 | Son | — | Illinois |
| 2 | Edwina Jean Sadek | 5 | Daughter | — | Illinois |
| 3 | Frank Inerson | 35 | Head | Cook | Denmark |
| 4 | Lorene Inerson | 38 | Wife | — | Texas |
| 5 | Helen Inerson | 9 | Daughter | — | Illinois |
| 6 | Damon Inerson | 7 | Son | — | Illinois |
| 7 | Beatrice Inerson | 5 | Daughter | — | Illinois |
| 8 | Eugene Price | 25 | Head | Delivery Truck | Illinois |
| 9 | Zheenie Price | 20 | Wife | — | Texas |
| 10 | Barbara Price | 2 | Daughter | — | Illinois |
| 11 | Elmer H. Lawrence | 52 | Head | Engineer | Illinois |
| 12 | Mary V. Lawrence | 52 | Wife | — | Wisconsin |
| 13 | Bernice Lawrence | 17 | Daughter | — | Illinois |
| 14 | Elizabeth Lawrence | 15 | Daughter | — | Illinois |
| 15 | William Lawrence | 13 | Son | — | Illinois |
| 16 | Mary Lawrence | 11 | Daughter | — | Illinois |
| 17 | John Lawrence | 9 | Son | — | Illinois |
| 18 | Robert Lawrence THIS PERSON | 19 | Son | Truck Driving | Illinois |
| 19 | Norman Clauss | 25 | Head | Watch Maker | Illinois |
| 20 | Lillian Clauss | 27 | Wife | — | Illinois |
| 21 | Wayne Clauss | 1 | Son | — | Illinois |
| 22 | Warren Clauss | 1 | Son | — | Illinois |
| 23 | Effie Fritsch | 52 | Head | Restaurant Wk. | Illinois |
| 24 | Homer Fritsch | 29 | Son-in-law | Interior Decorator | Illinois |
| 25 | Marion Fritsch | 25 | Daughter | Cashier | Illinois |
| 26 | Wallace Fritsch | 22 | Son | Clerk | Illinois |
| 27 | Garland Gibson | 32 | Head | Electrician | Illinois |
| 28 | Wm. M. Kline | 56 | Head | Laborer | Illinois |
| 29 | Anna Kline | 54 | Wife | — | Wisconsin |
| 30 | Albert Maiden | 32 | Head | Inspector | Indiana |
| 31 | Emily Maiden | 31 | Wife | Sales Lady | Illinois |
| 32 | Marilyn Maiden | 10 | Daughter | — | Illinois |
| 33 | Marjory Maiden | 9 | Daughter | — | Illinois |
| 34 | Lawrence Maiden | 15 | Brother | — | Indiana |
| 35 | Herbert Mole | 40 | Head | Decorator | England |
| 36 | Esther Mole | 32 | Wife | Packer | Illinois |
| 37 | Harley Hickman | 15 | Step Son | — | Illinois |
| 38 | Muriel Kaminski | 43 | Head | Barber | Poland |
| 39 | Benjamin Kaminski | 15 | Son | — | California |
| 40 | Cecile Cooper | 48 | Head | Manager | Minnesota |
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)