HR
Harold Roberts — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Harold Roberts across the 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Oliver & Katie — first a head (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Roberts |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Town - Cicero |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Stock Man |
| Industry | W. Machining & Drawing Supplies |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 960 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Stock Man |
| Township / Ward | Town Cicero |
| Est. Birth Year | ~1907 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Donald Roberts | Son | — | 7 | ~1933 |
| Helen Roberts | Spouse | — | 34 | ~1906 |
| Harold Roberts | Head | — | 33 | ~1907 |
Census Appearances
1910
Cook, Illinois
Son, age 3
Cook, Illinois · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roberts |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roberts |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| 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
Other, age 22
Cook, Illinois · implied b. ~1908 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roberts |
| Given Name | Harold |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 20 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Chauffeur |
| Industry | Freight |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 33
Cook-County, Illinois · implied b. ~1907 — 3 household members
| Surname | Roberts |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Town - Cicero |
| 1935 Residence (County) | Cook |
| Occupation | Stock Man |
| Industry | W. Machining & Drawing Supplies |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 960 |
| Highest Grade | Hs 1 |
| 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 Harold Roberts across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Oliver Roberts (~0.92 confidence) and mother Katie Roberts (~0.92 confidence) and mother Katie Roberts (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Oliver Roberts
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Katie Roberts
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Katie Roberts
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Roberts
Head · 1940 · age 33 · b. ~1907 · 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-t0627-00775-00954)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Nepomucena Opalewska | 74 | Wife | — | Poland |
| 42 | Mike Ross | 50 | Head | Track Loader | Lithuania |
| 43 | Dora Ross | 44 | Wife | — | Lithuania |
| 44 | Walter Klimka | 19 | Head | Baker'S Helper | Lithuania |
| 45 | John Samulivich | 30 | Brother-in-law | Machinist | Illinois |
| 46 | Stella Samulivich | 31 | Sister | Knitter | Illinois |
| 47 | Nello Carlini | 24 | Head | Buffer | Illinois |
| 48 | Dorothy Carlini | 23 | Wife | — | Illinois |
| 49 | Nancy Carlini | 0 | Daughter | — | Illinois |
| 50 | Nello Guelfi | 26 | Head | Assembler | Illinois |
| 51 | Camilla Guelfi | 23 | Wife | — | Illinois |
| 52 | Patricia Guelfi | 2 | Daughter | — | Illinois |
| 53 | Gust Carlini | 47 | Head | Laborer | Italy |
| 54 | Susan Carlini | 42 | Wife | — | Italy |
| 55 | Harvey Carlini | 21 | Son | Assembler | Illinois |
| 56 | Norman Carlini | 18 | Son | Auto Mechanic | Illinois |
| 57 | Richard Carlini | 8 | Son | — | Illinois |
| 58 | Patrick Harvey | 52 | Head | Chauffeur | Illinois |
| 59 | Margaret Harvey | 48 | Wife | — | Illinois |
| 60 | Robert Harvey | 21 | Son | Laborer | Illinois |
| 61 | George Harvey | 19 | Son | — | Illinois |
| 62 | Donald Harvey | 17 | Son | — | Illinois |
| 63 | Extra Line | None | — | — | — |
| 64 | Harold Roberts THIS PERSON | 33 | Head | Stock Man | Illinois |
| 65 | Helen Roberts | 34 | Wife | — | Illinois |
| 66 | Donald Roberts | 7 | Son | — | Illinois |
| 67 | Extra Line | None | — | — | — |
| 68 | Bruno Sikanis | 54 | Head | Chipper | Lithuania |
| 69 | Anna Sikanis | 48 | Wife | — | Lithuania |
| 70 | Paul Sikanis | 22 | Son | — | Illinois |
| 71 | Stella Sikanis | 19 | Daughter | New Worker | Illinois |
| 72 | Jack Dudek | 37 | Head | Lathe Operator | Poland |
| 73 | Agnes Dudek | 28 | Wife | — | Illinois |
| 74 | Mary J. Dudek | 7 | Daughter | — | Illinois |
| 75 | Dudek | 1 | Daughter | — | Illinois |
| 76 | Louis Morandini | 35 | Head | Foreman | Illinois |
| 77 | Marie Morandini | 34 | Wife | — | Illinois |
| 78 | Robert Morandini | 13 | Son | — | Illinois |
| 79 | Barbara Morandini | 1 | Daughter | — | Illinois |
| 80 | James Kosivas | 49 | Head | Salesman | Greece |
Pedigree Summary
Harold
Gen 1 · 3 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)