EN
Ellen Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Ellen Nelson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1871), then head of a 2-person household.
Age 69
b. ~1871
Female
Head
Born: Sweden
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Nelson |
| Given Name | Ellen |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1871 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ellen | Age | Birth yr |
|---|---|---|---|---|
| Jeanette Nelson | Daughter | — | 47 | ~1893 |
| Ellen Nelson | Head | — | 69 | ~1871 |
Census Appearances
1920
Cook, Illinois
Spouse, age 46
Cook, Illinois · implied b. ~1874 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Ellen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Sweden |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
Cook, Illinois
Spouse, age 58
Cook, Illinois · implied b. ~1872 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Ellen M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | First papers filed |
| Year of Immigration | 1900 |
| Age at First Marriage | 34 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Head, age 69
Cook-County, Illinois · implied b. ~1871 — 2 household members
| Surname | Nelson |
| Given Name | Ellen |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | No 7 |
| 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 Ellen Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ellen Nelson
Head · 1940 · age 69 · b. ~1871 · 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-t0627-00936-00322)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter Welkening | 46 | Son | Draftsman | Illinois |
| 2 | Agatha Welkening | 42 | Daughter | Stenographer | Illinois |
| 3 | Alice Welkening | 43 | Daughter | Sales Lady | Illinois |
| 4 | Michael Jasienicki | 39 | Head | Machinist | Illinois |
| 5 | Jennie Jasienicki | 40 | Wife | — | Poland |
| 6 | Michael Jasienicki | 2 | Son | — | Illinois |
| 7 | Robert Twardowski | 16 | Step-son | — | Illinois |
| 8 | Melville Carr | 44 | Head | Welder | Illinois |
| 9 | Julia Carr | 40 | Wife | — | Illinois |
| 10 | Shirley Carr | 16 | Daughter | — | Illinois |
| 11 | Melinda Carr | 13 | Son | — | Illinois |
| 12 | Elmer Johnson | 43 | Head | Owner | Illinois |
| 13 | Violet Johnson | 42 | Wife | — | Illinois |
| 14 | Arlyne Johnson | 14 | Daughter | — | Illinois |
| 15 | Beverly Johnson | 10 | Daughter | — | Illinois |
| 16 | Leroy Nelson | 34 | Head | Electrician | Illinois |
| 17 | Esther Nelson | 34 | Wife | — | Illinois |
| 18 | Clifford Nelson | 7 | Son | — | Illinois |
| 19 | Ellen Nelson THIS PERSON | 69 | Head | — | Sweden |
| 20 | Jeanette Nelson | 47 | Daughter | Owner | Illinois |
| 21 | Mary Mannion | 65 | Head | — | Ireland |
| 22 | John Murphy | 28 | Son | Medical Doctor | Illinois |
| 23 | Dorothy Murphy | 27 | Daughter | Stenographer | Illinois |
| 24 | John Mannion | 35 | Son | General Work | Illinois |
| 25 | Thomas Maroney | 43 | Head | Electric Crane Operator | Illinois |
| 26 | Catherine Maroney | 39 | Wife | — | Illinois |
| 27 | Marion Maroney | 17 | Daughter | — | Illinois |
| 28 | Catherine Maroney | 15 | Daughter | — | Illinois |
| 29 | Thomas Maroney | 13 | Son | — | Illinois |
| 30 | Dorothy Maroney | 6 | Daughter | — | Illinois |
| 31 | Helen Czarnecki | 44 | Head | — | Illinois |
| 32 | Irene Czarnecki | 24 | Daughter | Shirt Finisher | Illinois |
| 33 | Lottie Czarnecki | 20 | Daughter | Candy & Soda Clerk | Illinois |
| 34 | Pearl Czarnecki | 16 | Daughter | — | Illinois |
| 35 | Jennie Czarnecki | 12 | Daughter | — | Illinois |
| 36 | Helen Czarnecki | 11 | Daughter | — | Illinois |
| 37 | Martha Czarnecki | 5 | Daughter | — | Illinois |
| 38 | Teddy Czarnecki | 4 | Son | — | Illinois |
| 39 | John Cummings | 37 | Head | Burner In Steel Mill | Scotland |
| 40 | Marion Cummings | 39 | Wife | Fur Finisher | Scotland |
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)