DR
Dorothy Roberts — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Dorothy Roberts across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Minna & Minna — first a daughter (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Roberts |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Substitute teacher |
| Industry | Public School |
| Class of Worker | PW |
| Hours Worked | 10 |
| Income (1939) | 650 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Substitute Teacher |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1917 |
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 Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Roberts | Daughter | — | 23 | ~1917 |
| Sophia Roberts | Spouse | — | 46 | ~1894 |
| Susie Brokema | Other | — | 63 | ~1877 |
| J Roberts | Head | — | 52 | ~1888 |
| Herman Brokema | Other | — | 68 | ~1872 |
Census Appearances
1920
Cook, Illinois
Other, age 2
Cook, Illinois · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roberts |
| Given Name | Dorothy |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 13
Cook, Illinois · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roberts |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 23
Cook-County, Illinois · implied b. ~1917 — 5 household members
| Surname | Roberts |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Substitute teacher |
| Industry | Public School |
| Class of Worker | PW |
| Hours Worked | 10 |
| Income (1939) | 650 |
| Highest Grade | C 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 Dorothy Roberts across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Minna Ykema (~0.82 confidence) and mother Minna Ykema (~0.92 confidence) and mother Minna Krause (~0.82 confidence) and father J Roberts (~0.92 confidence) and mother Sophia Roberts (~0.92 confidence). The pedigree spans 2 generations with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.88
Mother
Minna Ykema
b. ~1853
Source mother>mother
● Household
· direct · ~0.82
Mother
Minna Ykema
b. ~1853
Source mother
● Household
· direct · ~0.92
Mother
Minna Krause
b. ~1854
Source mother>mother
● Household
· direct · ~0.82
Father
J Roberts
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Sophia Roberts
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Roberts
Daughter · 1940 · age 23 · b. ~1917 · 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-t0627-00940-00857)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Mctaggart | 70 | Mother-in-law | — | Minnesota |
| 42 | Edward De Lisle | 74 | Head | Retired | Indiana |
| 43 | Georgie (S) De Lisle | 68 | Wife | — | Indiana |
| 44 | Helen Barenfanger | 47 | Daughter | — | Ohio |
| 45 | Gene Barenfanger | 22 | Grandson | Machine Operator | Ohio |
| 46 | Zora Barenfanger | 21 | Granddaughter | — | Iowa |
| 47 | Samuel Garris | 81 | Head | — | Iowa |
| 48 | Julia S. Garris | 70 | Wife | — | Illinois |
| 49 | Gertrude Corkery | 48 | Daughter | — | Iowa |
| 50 | Mary Corkery | 20 | Granddaughter | — | Illinois |
| 51 | Ruth Corkery | 18 | Granddaughter | — | Illinois |
| 52 | Charles Corkery | 16 | Grandson | — | Illinois |
| 53 | Sam Penrick | 31 | Lodger | Salesman | Jugo Slavia |
| 54 | J. Louis Roberts | 52 | Head | Accountant | Illinois |
| 55 | Sophia Roberts | 46 | Wife | — | Illinois |
| 56 | Dorothy Roberts THIS PERSON | 23 | Daughter | Substitute Teacher | Illinois |
| 57 | Herman Brokema | 68 | Brother-in-law | — | Netherlands |
| 58 | Susie Brokema | 63 | Sister-in-law | — | Netherlands |
| 59 | William L. Beardsley | 55 | Head | Vice Pres. | Indiana |
| 60 | Nina C. Beardsley | 50 | Wife | — | Pennsylvania |
| 61 | Mary Beardsley | 80 | Mother | — | Indiana |
| 62 | Mildred Jimison | 31 | Maid | Maid | Mississippi |
| 63 | Dora C. Backus | 43 | Head | Clerk | Illinois |
| 64 | George Backus | 9 | Son | — | Illinois |
| 65 | Milo Backus | 7 | Son | — | Illinois |
| 66 | John Snyder | 37 | Head | Route Foreman | Illinois |
| 67 | Margaret Snyder | 31 | Wife | — | Illinois |
| 68 | Barbara Snyder | 9 | Daughter | — | Illinois |
| 69 | Suzanne Snyder | 6 | Daughter | — | Illinois |
| 70 | Thomas Teresiulis | 49 | Head | Wholesale Meat | Illinois |
| 71 | Victoria Teresiulis | 49 | Wife | — | Illinois |
| 72 | Chester Teresiulis | 25 | Son | Helper Wholesale Meat | Illinois |
| 73 | Leona Teresiulis | 23 | Daughter | — | Illinois |
| 74 | Evelyn Teresiulis | 21 | Daughter | — | Illinois |
| 75 | Thomas Jr. Teresiulis | 19 | Son | — | Illinois |
| 76 | George Zielinski | 37 | Head | Waiter | Germany |
| 77 | Pauline Zielinski | 28 | Wife | — | Missouri |
| 78 | Warren Wagner | 6 | Step-son | — | Wisconsin |
| 79 | Florence Nett | 34 | Servant | Housekeeper | Wisconsin |
| 80 | Continued On Sheet 4A | None | — | — | — |
Pedigree Summary
Dorothy
Gen 1 · 3 parents
~0.92
Gen 2 · 2 grandparents
~0.82
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)