EP
Elizabeth Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Elizabeth Peterson across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed), with identified parents John & John — first a daughter (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Peterson |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Rockford City |
| Est. Birth Year | ~1919 |
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 Elizabeth | Age | Birth yr |
|---|---|---|---|---|
| Eugene Stadel | Other | — | 25 | ~1915 |
| Elizabeth Peterson | Daughter | — | 21 | ~1919 |
| John Peterson | Son | — | 23 | ~1917 |
| Inya Peterson | Spouse | — | 58 | ~1882 |
| John Peterson | Head | — | 58 | ~1882 |
Census Appearances
1920
Winnebago, Illinois
Daughter, age 2
Winnebago, Illinois · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Elizabeth M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Norway |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Winnebago, Illinois
Daughter, age 12
Winnebago, Illinois · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Norway |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Winnebago-County, Illinois
Daughter, age 21
Winnebago-County, Illinois · implied b. ~1919 — 5 household members
| Surname | Peterson |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Income (1939) | 0 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| 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 Elizabeth Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Peterson (~0.92 confidence) and father John Peterson (~0.92 confidence) and father John Peterson (~0.92 confidence) and mother Inge Peterson (~0.92 confidence) and mother Inya Peterson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Peterson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
John Peterson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
John Peterson
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Inge Peterson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Inya Peterson
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Elizabeth Peterson
Daughter · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
John Peterson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00912-00747)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lloyd Hathaway | 35 | Head | Store Treasurer | Illinois |
| 2 | Alice Hathaway | 28 | Wife | — | Illinois |
| 3 | Russell G. Nelson | 21 | Head | Driver | Illinois |
| 4 | Helen M. Nelson | 20 | Wife | — | Illinois |
| 5 | Richard Nelson | 3 | Son | — | Illinois |
| 6 | Joseph P. Morrissey | 58 | Head | Truck Driver | Illinois |
| 7 | Margaret Morrissey | 53 | Wife | — | Illinois |
| 8 | Walter Finster | 29 | Head | Manager | Wisconsin |
| 9 | Vina Finster | 25 | Wife | — | Iowa |
| 10 | Ronald Finster | 3 | Son | — | Wisconsin |
| 11 | Agusta D. Ralston | 69 | Head | — | Illinois |
| 12 | Alice Nye | 51 | Partner | Teacher | Illinois |
| 13 | Fred Mcdonald | 64 | Head | Laborer | Illinois |
| 14 | Helen Mcdonald | 62 | Wife | — | Wisconsin |
| 15 | Roy Newton | 59 | Head | Foreman | Illinois |
| 16 | Lila Newton | 47 | Wife | Masseuse | Illinois |
| 17 | Helen Newton | 24 | Daughter | Comptometer | Illinois |
| 18 | Allen Newton | 81 | Father | — | Illinois |
| 19 | Effie L. Porter | 74 | Head | — | Illinois |
| 20 | John D. Peterson | 58 | Head | Proprietor | Sweden |
| 21 | Inya Peterson | 58 | Wife | — | Norway |
| 22 | John Jr. Peterson | 23 | Son | Die Setter | Illinois |
| 23 | Elizabeth Peterson THIS PERSON | 21 | Daughter | — | Illinois |
| 24 | Eugene Stadel | 25 | Lodger | Ass'T Farm Advisor | Illinois |
| 25 | Gordon W. Stringer | 43 | Head | Teacher | Illinois |
| 26 | Nellie Stringer | 43 | Wife | — | Illinois |
| 27 | R. Bruce Stringer | 17 | Son | — | Illinois |
| 28 | Gordon J. Stringer | 15 | Son | — | Illinois |
| 29 | Earl Stringer | 13 | Son | — | Illinois |
| 30 | James H. Perrine | 71 | Head | — | Pennsylvania |
| 31 | Dora Mae Perrine | 57 | Wife | Relief Girl | Missouri |
| 32 | George J. Perrine | 38 | Son | Paper-Cutter | Illinois |
| 33 | Robert Ward | 26 | Head | Clerk | Illinois |
| 34 | Amelia Ward | 23 | Wife | Secretary | Illinois |
| 35 | Beryl Anderson | 30 | Sister | Sewer + Burlap | Illinois |
| 36 | Elizabeth Grumet | 71 | Head | — | Illinois |
| 37 | Dorothy Grumet | 43 | Daughter | Proprietress | Illinois |
| 38 | Todd | None | — | — | — |
| 39 | James L. Masterson | 56 | Head | — | Illinois |
| 40 | Blanche Masterson | 54 | Wife | — | Illinois |
Related Census Records
Pedigree Summary
Elizabeth + 1 sibling
Gen 1 · 5 parents
~0.92
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)