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Clara Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Clara Nelson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1862), then head of a 3-person household.
Age 78
b. ~1862
Female
Head
Born: Sweden
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Nelson |
| Given Name | Clara |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 78 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1862 |
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 Clara | Age | Birth yr |
|---|---|---|---|---|
| Clara Nelson | Head | — | 78 | ~1862 |
| James Nelson | Son | — | 48 | ~1892 |
| Elanore Nelson | Daughter | — | 43 | ~1897 |
Census Appearances
1920
Cook, Illinois
Other, age 57
Cook, Illinois · implied b. ~1863 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Clara |
| Relationship to Head | Housekeeper |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Single |
| Birthplace | Sweden |
| Year of Immigration | 1886 |
| Naturalization Status | Alien |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Housekeeper |
| Industry | Private Family |
| 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
Other, age 69
Cook, Illinois · implied b. ~1861 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Clara |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1881 |
| Age at First Marriage | 29 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Head, age 78
Cook-County, Illinois · implied b. ~1862 — 3 household members
| Surname | Nelson |
| Given Name | Clara |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 78 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| 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 Clara Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Clara Nelson
Head · 1940 · age 78 · b. ~1862 · 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-t0627-01001-00183)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Otto Schoner | 36 | Head | Patrolman | New Jersey |
| 2 | Adelaide Schoner | 34 | Wife | — | Illinois |
| 3 | Roger Schoner | 5 | Son | — | Illinois |
| 4 | Gustav Widman | 58 | Head | Carpenter | Sweden |
| 5 | Ida Widman | 60 | Wife | — | Sweden |
| 6 | David Widman | 33 | Son | Steel Planer | Illinois |
| 7 | Axel Widman | 21 | Son | Laborer | Illinois |
| 8 | John Widman | 19 | Son | Floor Worker | Illinois |
| 9 | Dorothy Widman | 18 | Daughter | — | Illinois |
| 10 | Sven Wilman | 31 | Head | Assembler | Sweden |
| 11 | Jean Wilman | 26 | Wife | — | Michigan |
| 12 | Gloria Wilman | 5 | Daughter | — | Illinois |
| 13 | Ruth Carlson | 29 | Head | Bookkeeper | Sweden |
| 14 | Shirley Ruth Carlson | 4 | Daughter | — | Illinois |
| 15 | Samuel Rystedt | 54 | Head | Draftsman | Sweden |
| 16 | Elna Rystedt | 51 | Wife | — | Kansas |
| 17 | William Rystedt | 23 | Son | Laborer | Illinois |
| 18 | Eugene Rystedt | 20 | Son | Office Clerk | Illinois |
| 19 | Robert Rystedt | 15 | Son | — | Illinois |
| 20 | Lorraine Rystedt | 13 | Daughter | — | Illinois |
| 21 | Hans Christensen | 52 | Head | Boiler Pipe Man | Illinois |
| 22 | Emelia Christensen | 46 | Wife | — | Illinois |
| 23 | Howard Christensen | 23 | Son | Maintenance | Illinois |
| 24 | Charles Christensen | 17 | Son | New Worker | Illinois |
| 25 | Daniel Mielke | 54 | Head | Trav. Salesman | Illinois |
| 26 | Edna Mielke | 51 | Wife | — | Illinois |
| 27 | Daniel Mielke | 13 | Son | — | Illinois |
| 28 | Philip Luke | 44 | Head | Floor Manager | Wisconsin |
| 29 | Bessie Luke | 39 | Wife | — | Illinois |
| 30 | Richard Luke | 17 | Son | New Worker | Illinois |
| 31 | Janet Luke | 12 | Daughter | — | Illinois |
| 32 | Jerome Kimmel | 31 | Head | Prop. Furn. Co. | Illinois |
| 33 | Geraldine Kimmel | 31 | Wife | — | Illinois |
| 34 | Walter Doran | 60 | Head | Piano Tuner | Illinois |
| 35 | Dora V. Doran | 59 | Wife | — | Norway |
| 36 | Janet F. Doran | 24 | Daughter | Priv. Secretary | Illinois |
| 37 | Clara Nelson THIS PERSON | 78 | Head | — | Sweden |
| 38 | Elanore Nelson | 43 | Daughter | Switchboard Op. | Illinois |
| 39 | James Nelson | 48 | Son | Truck Driver | Illinois |
| 40 | William Seymour | 54 | Head | Maintenance Man | 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)