JL
James Lamb — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Lamb across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Joseph & James — first a son (b.~1912), then head of a 7-person household.
Age 28
b. ~1912
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Lamb |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO CITY |
| 1935 Residence (County) | COOK |
| Additional Details | |
| Occupation | Bus Driver |
| Industry | Motor Coach In City |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 491 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Bus Driver |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1912 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Joseph Lamb | Head | — | 75 | ~1865 |
| Joseph Lamb | Son | — | 30 | ~1910 |
| Edna Lamb | Daughter | — | 26 | ~1914 |
| Irene Lamb | Daughter | — | 38 | ~1902 |
| James Lamb | Son | — | 28 | ~1912 |
| Hazel Lamb | Daughter | — | 34 | ~1906 |
| Loretta Lamb | Daughter | — | 32 | ~1908 |
Census Appearances
1920
Cook, Illinois
Son, age 6
Cook, Illinois · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 16
Cook, Illinois · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | James Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 28
Cook-County, Illinois · implied b. ~1912 — 7 household members
| Surname | Lamb |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO CITY |
| 1935 Residence (County) | COOK |
| Occupation | Bus Driver |
| Industry | Motor Coach In City |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 491 |
| Highest Grade | Hs 2 |
| 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 James Lamb across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Lamb (~0.92 confidence) and father James Lamb (~0.92 confidence) and mother Mary Lamb (~0.92 confidence) and father James Lamb (~0.92 confidence) and mother Mary Lamb (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Lamb
b. ~1865
Source father
● Household
· direct · ~0.92
Father
James Lamb
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mary Lamb
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
James Lamb
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Mary Lamb
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Lamb
Son · 1940 · age 28 · b. ~1912 · Illinois
★ You are viewing this record
Sibling
Loretta Lamb
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Lamb
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hazel Lamb
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Lamb
Sibling · 1940 · age 38
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Lamb
Sibling · 1940 · age 30
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
39 people indexed on this census page (nara:1940:m-t0627-01023-00838)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Framberg | 41 | Head | Salesman | Illinois |
| 2 | Eva Framberg | 39 | Wife | — | Massachusetts |
| 3 | Pellor Framberg | 17 | Daughter | — | Illinois |
| 4 | Louise Framberg | 15 | Daughter | — | Illinois |
| 5 | Leonard Dresner | 30 | Head | Salesman | Illinois |
| 6 | Phyllis Dresner | 26 | Wife | — | Illinois |
| 7 | Charles Dresner | 2 | Son | — | Illinois |
| 8 | Emily Vincena | 18 | House Keeper | Maid | Illinois |
| 9 | Maurice Klein | 32 | Head | Credit Salesman | Russia |
| 10 | Mildred Klein | 26 | Wife | — | Illinois |
| 11 | Barbara Klein | 2 | Daughter | — | Illinois |
| 12 | Dolores Wheeler | 18 | House Keeper | Maid | Illinois |
| 13 | Joseph E. Lamb | 75 | Head | — | Illinois |
| 14 | Irene Lamb | 38 | Daughter | Supervisor Savings Dept. | Illinois |
| 15 | Hazel Lamb | 34 | Daughter | Salesperson | Illinois |
| 16 | Loretta Lamb | 32 | Daughter | — | Illinois |
| 17 | Joseph E. Jr. Lamb | 30 | Son | — | Illinois |
| 18 | James A. Lamb THIS PERSON | 28 | Son | Bus Driver | Illinois |
| 19 | Edna Lamb | 26 | Daughter | — | Illinois |
| 20 | Ernest Borchardt | 42 | Head | Wholesale Druggist | Illinois |
| 21 | Sybil Borchardt | 42 | Wife | — | Missouri |
| 22 | Robert Borchardt | 19 | Son | — | Illinois |
| 23 | Betty Borchardt | 8 | Daughter | — | Illinois |
| 24 | Peter Schor | 31 | Head | Proprietor | Illinois |
| 25 | Lucille Schor | 28 | Wife | — | Illinois |
| 26 | Dennis Schor | 5 | Son | — | Illinois |
| 27 | Elwin Conley | 44 | Head | Telephone Repairman | Illinois |
| 28 | Helen Conley | 42 | Wife | — | Iowa |
| 29 | Betty Conley | 19 | Daughter | Salesgirl | Illinois |
| 30 | Leona Conley | 16 | Daughter | — | Illinois |
| 31 | Henry Anderson | 47 | Head | Carpenter | Sweden |
| 32 | Ellen Anderson | 47 | Wife | — | Sweden |
| 33 | Fred Seltzer | 33 | Head | Salesman | Illinois |
| 34 | Amy Seltzer | 28 | Wife | Teacher | Illinois |
| 35 | Norman Goldberg | 37 | Head | Buyer | Russia |
| 36 | Ruth Goldberg | 35 | Wife | — | Illinois |
| 37 | Malcolm Goldberg | 5 | Son | — | Illinois |
| 38 | Mildred Krulia | 25 | House Keeper | Maid | Pennsylvania |
| 39 | Hyman Massover | 35 | Head | Jeweler | Illinois |
Pedigree Summary
James + 5 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)