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Robert Johnston — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Robert Johnston across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1900), then head of a 4-person household.
Age 40
b. ~1900
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnston |
| Given Name | Robert E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Steel Inspector |
| Industry | Foundry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Steel Inspector |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1900 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Johnston | Head | — | 40 | ~1900 |
| James Johnston | Son | — | 14 | ~1926 |
| Robert Johnston | Son | — | 12 | ~1928 |
| Florence Johnston | Spouse | — | 39 | ~1901 |
Census Appearances
1920
Cook, Illinois
Son, age 21
Cook, Illinois · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Scotland |
| Year of Immigration | 1910 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Machinist |
| Industry | Steel Co |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Cook, Illinois
Head, age 32
Cook, Illinois · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1908 |
| Age at First Marriage | 22 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Rigger |
| Industry | Ship yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 33 |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Cook-County, Illinois
Head, age 40
Cook-County, Illinois · implied b. ~1900 — 4 household members
| Surname | Johnston |
| Given Name | Robert E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Steel Inspector |
| Industry | Foundry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2000 |
| Highest Grade | No 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 Robert Johnston across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Johnston
Head · 1940 · age 40 · b. ~1900 · 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-t0627-00942-00062)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank E Bichlap | 57 | Head | First Helper | Germany |
| 2 | Wilhelmine Bichlap | 47 | Wife | — | Germany |
| 3 | Otto Bichlap | 20 | Son | Printing | Germany |
| 4 | Peter Solutovich | 36 | Head | Packer | Yugoslavia |
| 5 | Mildred Solutovich | 32 | Wife | — | Illinois |
| 6 | Elaine Solutovich | 7 | Daughter | — | Illinois |
| 7 | Nicholas E Maivrich | 30 | Brother-in-law | Clerk | Illinois |
| 8 | Helen Maivrich | 23 | Sister-in-law | — | Illinois |
| 9 | Marsha Maivrich | 5 | Niece | — | Illinois |
| 10 | David E Mchillsay | 45 | Head | Electrician | Illinois |
| 11 | Florence Mchillsay | 40 | Wife | — | Illinois |
| 12 | Doris Mchillsay | 10 | Daughter | — | Illinois |
| 13 | Sadie E Mchillsay | 57 | Head | — | Pittsburg |
| 14 | Martha Clump | 41 | Sister | — | Scotland |
| 15 | John Nelson | 45 | Lodger | Carpenter | Sweden |
| 16 | William Robertson | 43 | Head | Mechanical Foreman | Scotland |
| 17 | Jean E Robertson | 43 | Wife | — | Scotland |
| 18 | Ella Robertson | 18 | Daughter | Stenographer | Scotland |
| 19 | Robert Ruskin | 37 | Brother-in-law | Scarfier | Scotland |
| 20 | Robert E Johnston THIS PERSON | 40 | Head | Steel Inspector | Scotland |
| 21 | Florence Johnston | 39 | Wife | — | Illinois |
| 22 | James Johnston | 14 | Son | — | Illinois |
| 23 | Robert Jr Johnston | 12 | Son | — | Illinois |
| 24 | William G Barlow | 46 | Head | Engineer Locomotive | Alabama |
| 25 | Ollie Barlow | 42 | Wife | — | Tennessee |
| 26 | Mildred Barlow | 22 | Daughter | — | Illinois |
| 27 | Walter Barlow | 18 | Son | Order Clerk | Illinois |
| 28 | Lois Barlow | 18 | Daughter | — | Illinois |
| 29 | Burton Barlow | 10 | Son | — | Illinois |
| 30 | Laverne Barlow | 7 | Daughter | — | Illinois |
| 31 | John Gillette | 50 | Head | — | Belgium |
| 32 | Grace E Gillette | 55 | Wife | — | Illinois |
| 33 | James Gillette | 23 | Son | — | Kansas |
| 34 | Homer Gillette | 17 | Son | New Worker | Kansas |
| 35 | Eugene Gillette | 15 | Daughter | — | Kansas |
| 36 | Clarence Brandt | 38 | Head | Operator Helper | Michigan |
| 37 | Vernice Brandt | 38 | Wife | — | Illinois |
| 38 | Betty Jean Brandt | 12 | Daughter | — | Illinois |
| 39 | Clarence Brandt | 8 | Son | — | Illinois |
| 40 | Donald Brandt | 5 | Son | — | Illinois |
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)