EP
Ellen Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Ellen Peterson across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1884), then head of a 5-person household.
Age 56
b. ~1884
Female
Spouse
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Peterson |
| Given Name | Ellen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1884 |
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 Ellen | Age | Birth yr |
|---|---|---|---|---|
| Arnold Peterson | Son | — | 22 | ~1918 |
| Gerald Peterson | Son | — | 14 | ~1926 |
| Ellen Peterson | Spouse | — | 56 | ~1884 |
| Harry Peterson | Son | — | 28 | ~1912 |
| Carl Peterson | Head | — | 55 | ~1885 |
Census Appearances
1900
Cook, Illinois
Other, age 18
Cook, Illinois · implied b. ~1882 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Ellen |
| Relationship to Head | Servant |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Sweden |
| Birth Month | June |
| Birth Year | 1882 |
| Year of Immigration | 1897 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Cook |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1910
Cook, Illinois
Other, age 26
Cook, Illinois · implied b. ~1884 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Ellen |
| Relationship to Head | Maid |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| Children Born | 0 |
| Children Living | 0 |
| Year of Immigration | 1901 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1920
Cook, Illinois
Spouse, age 35
Cook, Illinois · implied b. ~1885 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Ellen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1904 |
| Naturalization Status | Naturalized |
| 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
Other, age 45
Cook, Illinois · implied b. ~1885 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Ellen, M. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1905 |
| Age at First Marriage | 25 |
| 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
Spouse, age 56
Cook-County, Illinois · implied b. ~1884 — 5 household members
| Surname | Peterson |
| Given Name | Ellen |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| 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 Peterson across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ellen Peterson
Spouse · 1940 · age 56 · b. ~1884 · 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-t0627-00939-00146)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harry Angstrom | 50 | Head | Tinman | Illinois |
| 42 | Lillian Angstrom | 49 | Wife | — | Illinois |
| 43 | Pearl B Angstrom | 23 | Daughter | Housework | Illinois |
| 44 | Wendell Angstrom | 24 | Son | Welder | Illinois |
| 45 | Harry Bakalar | 9 | Grandson | — | Illinois |
| 46 | Marlene Bakalar | 4 | Granddaughter | — | Illinois |
| 47 | Egbert Mcheerema | 37 | Head | Plumber | Illinois |
| 48 | Agnes Mcheerema | 36 | Wife | — | Illinois |
| 49 | Bernice M Mcheerema | 7 | Daughter | — | Illinois |
| 50 | Egbert Sr Mcheerema | 78 | Father-in-law | Retired | Holland |
| 51 | William Cook | 54 | Head | Plasterer | Holland |
| 52 | Cina Cook | 48 | Wife | — | Holland |
| 53 | William Jr Cook | 24 | Son | Laborer | Illinois |
| 54 | Adrianna Cook | 20 | Daughter | General Office | Wisconsin |
| 55 | Florence Cook | 17 | Daughter | — | Wisconsin |
| 56 | John Cook | 83 | Father-in-law | Retired | Holland |
| 57 | Martin Lynch | 38 | Head | Truck Driver | Illinois |
| 58 | Harlene Lynch | 27 | Wife | — | Illinois |
| 59 | Martin Jr Lynch | 4 | Son | — | Illinois |
| 60 | John R Lynch | 1 | Son | — | Illinois |
| 61 | Barbara Marineik | 60 | Mother-in-law | — | Czechoslovakia |
| 62 | Victor H Beaty | 64 | Head | Laborer | Indiana |
| 63 | Laura B Beaty | 60 | Wife | — | Missouri |
| 64 | John Laverman | 34 | Head | Draftsman | Holland |
| 65 | Henrietta Laverman | 30 | Wife | — | Illinois |
| 66 | Roger Laverman | 1 | Son | — | Illinois |
| 67 | Carl E Peterson | 55 | Head | Carpenter | Sweden |
| 68 | Ellen Peterson THIS PERSON | 56 | Wife | — | Sweden |
| 69 | Harry E Peterson | 28 | Son | Clerical | Illinois |
| 70 | Arnold E Peterson | 22 | Son | Clerical | Illinois |
| 71 | Gerald E Peterson | 14 | Son | — | Illinois |
| 72 | August J Nydam | 48 | Head | Butcher | Holland |
| 73 | Edna F Nydam | 42 | Wife | — | Illinois |
| 74 | Lorraine A Nydam | 15 | Daughter | — | Illinois |
| 75 | Lois L Nydam | 9 | Daughter | — | Illinois |
| 76 | Joyce E Nydam | 6 | Daughter | — | Illinois |
| 77 | William Dotinga | 61 | Head | Machinist | Sweden |
| 78 | Helen V Dotinga | 58 | Wife | — | Indiana |
| 79 | Anna S Dotinga | 29 | Daughter | Stenographer | Illinois |
| 80 | Naomi M Dotinga | 27 | Daughter | Stenographer | 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)