RP
Richard Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Richard Peterson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 4-person household.
Age 48
b. ~1892
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Peterson |
| Given Name | Richard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Evanston |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Janitor |
| Industry | Apt Buildings |
| Class of Worker | PW |
| Hours Worked | 68 |
| Income (1939) | 2040 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Janitor |
| Township / Ward | Evanston |
| Est. Birth Year | ~1892 |
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 Richard | Age | Birth yr |
|---|---|---|---|---|
| Ends Block | Other | — | — | |
| Richard Peterson | Head | — | 48 | ~1892 |
| Tekla Peterson | Spouse | — | 50 | ~1890 |
| Richard Peterson | Son | — | 21 | ~1919 |
Census Appearances
1920
Cook, Illinois
Other, age 27
Cook, Illinois · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Richard |
| Relationship to Head | Brother-in-law |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Sweden |
| Year of Immigration | 1912 |
| Naturalization Status | Alien |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Carpenter |
| Industry | Outside |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
Cook, Illinois
Head, age 37
Cook, Illinois · implied b. ~1893 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Richard A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1911 |
| Age at First Marriage | 30 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Carpenter |
| Industry | Body works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Home Value / Rent | 80.00 |
| Veteran | No |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Head, age 48
Cook-County, Illinois · implied b. ~1892 — 4 household members
| Surname | Peterson |
| Given Name | Richard |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Evanston |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Janitor |
| Industry | Apt Buildings |
| Class of Worker | PW |
| Hours Worked | 68 |
| Income (1939) | 2040 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 Richard Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Richard Peterson
Head · 1940 · age 48 · b. ~1892 · Illinois
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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-t0627-00778-00902)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clarence Cook | 42 | Head | Manager | Illinois |
| 2 | Ethel Cook | 36 | Wife | — | Illinois |
| 3 | Richard Peterson THIS PERSON | 48 | Head | Janitor | Sweden |
| 4 | Tekla Peterson | 50 | Wife | — | Sweden |
| 5 | Richard Jr Peterson | 21 | Son | New Worker | California |
| 6 | Ends Block | None | Here | — | — |
| 7 | Herbert P Johnson | 67 | Head | Treasurer | Illinois |
| 8 | Mabelle Johnson | 49 | Wife | Secretary | Illinois |
| 9 | Shirle Johnson | 22 | Daughter | — | Illinois |
| 10 | Carl J Brown | 58 | Head | Asst Way Agent | Illinois |
| 11 | Venie Brown | 41 | Wife | — | Illinois |
| 12 | — | None | — | — | — |
| 13 | — | None | — | — | — |
| 14 | — | None | — | — | — |
| 15 | — | None | — | — | — |
| 16 | — | None | — | — | — |
| 17 | — | None | — | — | — |
| 18 | Fredric Clarke | 68 | Head | Owner | Michigan |
| 19 | Mary R Clarke | 62 | Wife | — | Michigan |
| 20 | Frances Webster | 63 | Lodger | Teacher | Canada-Eng |
| 21 | Bartlett Marimon | 37 | Head | Attorney | Illinois |
| 22 | Laura N Marimon | 35 | Wife | — | Indiana |
| 23 | Barbara Marimon | 9 | Daughter | — | Illinois |
| 24 | Laura Anne Marimon | 6 | Daughter | — | Illinois |
| 25 | Edward Roy Frank | 40 | Head | Switchman | Illinois |
| 26 | Irma R Frank | 39 | Wife | — | Illinois |
| 27 | Peter Lawlor | 31 | Head | Salesman | I Free State |
| 28 | Edith Lawlor | 31 | Wife | — | Michigan |
| 29 | Lawrence Peter Lawlor | 4 | Son | — | Illinois |
| 30 | Kenneth Patrick Lawlor | 2 | Son | — | Illinois |
| 31 | William B Lawlor | 0 | Son | — | Illinois |
| 32 | Agnes S Hougardy | 31 | Lodger | Beauty Operator | Illinois |
| 33 | Genevieve L Conrad | 28 | Lodger | Tester | Illinois |
| 34 | Elizabeth S Sumner | 19 | Lodger | Housework | N. Dakota |
| 35 | — | None | — | — | — |
| 36 | — | None | — | — | — |
| 37 | John R Abernathy | 44 | Head | Mess Attendant | Michigan |
| 38 | Neva Abernathy | 43 | Wife | — | Illinois |
| 39 | Chester W Hooker | 74 | Head | Conductor | Illinois |
| 40 | Mary Louise Hooker | 59 | Wife | — | 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)