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James Robertson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Robertson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Charles & Barbara — first a head (b.~1902), then head of a 5-person household.
Age 38
b. ~1902
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Robertson |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Public Utility |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Mechanic |
| Township / Ward | Chicago |
| Est. Birth Year | ~1902 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Robertson | Head | — | 38 | ~1902 |
| George Robertson | Son | — | 15 | ~1925 |
| Raymond Robertson | Son | — | 1 | ~1939 |
| James Robertson | Son | — | 13 | ~1927 |
| Elsie Robertson | Spouse | — | 34 | ~1906 |
Census Appearances
1920
Cook, Illinois
Son, age 18
Cook, Illinois · implied b. ~1902 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Scotland |
| Year of Immigration | 1908 |
| Naturalization Status | Alien |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Mechanic |
| Industry | Automobile Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Cook, Illinois
Head, age 28
Cook, Illinois · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robertson |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1909 |
| Age at First Marriage | 21 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Repairman |
| Industry | Auto Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Home Value / Rent | 55.00 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Cook-County, Illinois
Head, age 38
Cook-County, Illinois · implied b. ~1902 — 5 household members
| Surname | Robertson |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Mechanic |
| Industry | Public Utility |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Robertson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Robertson (~0.92 confidence) and mother Barbara Robertson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Robertson
b. ~1856
Source father
● Household
· direct · ~0.92
Mother
Barbara Robertson
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Robertson
Head · 1940 · age 38 · b. ~1902 · Illinois
★ You are viewing this record
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-t0627-00957-00380)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Peter Kahl | 28 | Head | Plumber | Illinois |
| 42 | Marie Kahl | 23 | Wife | — | Illinois |
| 43 | Eugene Kahl | 2 | Son | — | Illinois |
| 44 | August Krueger | 67 | Head | Laborer | Illinois |
| 45 | Sophie Krueger | 65 | Wife | — | Illinois |
| 46 | Albert Krueger | 37 | Son | Clerk | Illinois |
| 47 | James Robertson THIS PERSON | 38 | Head | Mechanic | Scotland |
| 48 | Elsie Robertson | 34 | Wife | — | Illinois |
| 49 | George Robertson | 15 | Son | — | Illinois |
| 50 | James Robertson | 13 | Son | — | Illinois |
| 51 | Raymond Robertson | 1 | Son | — | Illinois |
| 52 | William Zemke | 48 | Head | Carpenter | Illinois |
| 53 | Elizabeth Zemke | 40 | Wife | — | Illinois |
| 54 | Harold Gueppner | 37 | Head | Chauffeur | Illinois |
| 55 | Doris Gueppner | 32 | Wife | — | Illinois |
| 56 | Mary Gueppner | 13 | Daughter | — | Illinois |
| 57 | Harold Gueppner | 10 | Son | — | Illinois |
| 58 | Donald Gueppner | 7 | Son | — | Illinois |
| 59 | Harry O'Brien | 49 | Head | Janitor | Illinois |
| 60 | Agnes O'Brien | 47 | Wife | — | Illinois |
| 61 | (Wrong No Of People Enumerated By Neighbor) | None | — | — | — |
| 62 | Catherine Ratigan | 25 | Head | Stenographer | Illinois |
| 63 | Norman Muthow | 38 | Head | Traffic Manager | Illinois |
| 64 | Alice Muthow | 37 | Wife | — | Illinois |
| 65 | Bernard Muthow | 0 | Son | — | Illinois |
| 66 | (End Block 5 And South Robey St) | None | — | — | — |
| 67 | Walter Dick | 40 | Head | Grainier | Illinois |
| 68 | Rita Dick | 43 | Wife | Laborer | Wisconsin |
| 69 | May Ruth Dick | 12 | Daughter | — | Illinois |
| 70 | Edward Dick | 25 | Son-in-law | Spot Welder | Illinois |
| 71 | John Walker | 73 | Head | — | Illinois |
| 72 | Arthur Walker | 44 | Son | Laborer | Illinois |
| 73 | Pearl Walker | 43 | Daughter | — | Illinois |
| 74 | George Vanderliet | 29 | Head | Sheet Metal Worker | Holland |
| 75 | Margaret Vanderliet | 29 | Wife | — | Illinois |
| 76 | Joseph Vanderliet | 27 | Head | Typist | Holland |
| 77 | Marie Vanderliet | 24 | Wife | — | Germany |
| 78 | Henry Vanderliet | 1 | Son | — | Illinois |
| 79 | Albin Erickson | 41 | Head | Carpenter | Sweden |
| 80 | Gertrude Erickson | 40 | Wife | — | Sweden |
Pedigree Summary
James
Gen 1 · 2 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)